Insect spraying: rethink needed

Published in Poisons Beware

The campaign to eliminate mosquitoes through routine insect spraying is not working! And it's dangerous. We at Eco Hvar are asking for change.

INSECT SPRAYING ON HVAR

From Jelsa Council: "The insect spraying programme, as a means of protecting the population against infectious diseases is carried out in order to eliminate mosquito larvae, thus removing the possibility for mosquitoes to develop and multiply, in this way reducing damage to the environment and people" (e-mail, 11.08.2017.)*

WHY WE ARE WORRIED

Infectious diseases like Dengue and West Nile Fever are extremely rare in Croatia1,2,3,4. Despite this, insect spraying in the form of 'fogging' against adult mosquitoes is carried out on Hvar three times during the high summer tourist season, and there are separate actions against mosquito larvae and flies at various times throughout the year.

The insect control actions have been carried out for years without adhering fully to the regulations laid down by the County Public Health Institute: 

i) for the fogging, dangerous chemical pesticides are spread all over the environment;

ii) the very serious possible adverse effects of the pesticides have not been advertised; 

iii) little or no use has been made of environmentally-friendly alternatives to poisons;

iv) there is no public education about pest control;

v) warnings about the 'fogging' actions are totally inadequate;

vi) the routes taken by the 'fogging' vehicle are not made public;

vii) the fogging spraying has been done without regard to the vineyards, olive groves, orchards and vegetable plots alongside the roads, so that substances which are not authorized to be used on plants enter the food chain nonetheless (see 'Pesticides, Laws and Permits' for more details about authorizations);

viii) the larvicide and fly control measures are not publicized at all;

ix) at local level, it seems that the poison spraying programme is not under strict supervision and control, as it should be according to the regulations;

x) it seems that no-one at local or national level is monitoring the effectiveness and possible ill-effects relating to the spraying programme: despite regular insect suppression measures, every year there are increasing numbers of mosquitoes, as they become resistant to the poisons used 5,6,7; at the same time, there has been a visible significant decline in numbers of birds. bats, and beneficial insects. Monitoring of invasive mosquito species was started in Croatia in 2016, but since then it has been limited in scale, and there has been no monitoring of any kind on Hvar, to our knowledge.

2011: Warning to beekeepers, Croatian Beekepers' Association, but such warnings have been patchy over the years

DETAILS OF THE POISONS

POISONS USED: In 2012, two pyrethroid insecticides were used on Hvar for the 'fogging', a combination of Permethrin and Cypermethrin; in 2014, the spray used across the Jelsa Council area was Permex 22E (active ingredients Permethrin and Tetramethrin, in combination with a synergist, Piperonyl Butoxide); in 2015 Microfly (Cypermethrin),and Twenty-one (Azamethiphos) were used against flies; in 2017, fogging in the Hvar Town, Stari Grad and Jelsa rtegions was carried out using Permex 22E, while Cipex (Cypermethrin). Microfly (Cypermethrin) and Muhomor (Azamethiphos) were used against flies around the rubbish bins and rubbish dumps. Azamethiphos is an organophosphate, the others are pyrethroids. The combined effects of such chemical pesticides on environmental and human health are not known

Pyrethroids8 are dangerous poisons 9,10,11. Each of the poisons is dangerous in its own right, not only for insects but for other living creatures. In 2017, overnight 'fogging' took place in June, July and August. The street spraying is indiscriminate, spreading poison over houses, terraces, gardens, fields, and any hapless humans or animals who happen to get in the way. 

ABOUT THE INSECTICIDES USED IN THE JELSA COUNCIL AREA, 2017

Cipex - active ingredient Cypermethrin12 (pyrethroid). Cypermethrin is very toxic to cats13, bees, aquatic insects and fish, and to a lesser degree to birds. In humans, Cypermethrin poisoning can give rise to numbness, burning, loss of bladder control, vomiting, loss of co-ordination, coma, seizures, and (rarely) death 14,15,16. It is classified in the United States as a possible cause of cancer17.

Permex 22E- the two active pyrethroid ingredients of Permethrin and Tetramethrin. Permethrin 18,19comes in many different formulations, some more poisonous than others. It is highly toxic to bees, sea organisms, fish20 and other animals21. It is also poisonous to cats22. The possible ill-effects on humans are considered less dramatic than those of Cypermethrin, but it can cause neurological damage23,24, as well as problems in the immune and endocrine systems. It can have a particularly bad effect on children, and the American Environmental Protection Agency classified it as a potential carcinogen in 2006.25 Given their known ill-effects on aquatic life-forms, pyrethroids must not be used near water sources. Also Permethrin is not allowed on places where animals forage for food.

The EPA registration document for Tetramethrin (2010)26 classified it as a potential human carcinogen, and identified it as extremely toxic to bees and aquatic organisms, including fish and aquatic invertebrates. It can cause dizziness, breathing difficulties, coughing, eye irritation, gastrointestinal upset, blisters and skin rashes. The EPA document stated that: "Tetramethrin is used by individual home-owners or industrial / commercial property owners, in individual, isolated areas, and in small amounts as opposed to wide scale uses (i.e., for agriculture or mosquito abatement by public authorities)." 27 For this reason, they did not test the effect of Tetramethrin on drinking water. Tetramethrin is not supposed to be used on or near foodstuffs27.

The synergist Piperonyl Butoxide in Permex 22E carries harmful effects of its own, as it is highly toxic to aquatic life, with long-lasting effects (ECHA infocard)

Microfly - active ingredient Cypermethrin (see above, under Cipex).

Muhomor - active ingredient Azamethiphos28, an organophosphate poison which is not on the list of insecticides approved in the European Union.29,30. The instructions state that it should only be applied to target surfaces, and not sprayed in the air. Muhomor AZ was the product used for spraying around dustbins and rubbish dumps on Hvar in 2017. It is a water-soluble insecticide designed to eliminate flies in stalls for cattle, calves, horses, pigs, and chickens31. It is mostly used in enclosed spaces. As at September 2021, it was not on the list of products authorized by the European Chemicals Agency.

INSECTICIDES USED IN THE HVAR TOWN AREA, 2017

According to the published Programme of Measures for Compulsory Pest Control 2017, published by the Town Wardens' Office, five pyrethroids were listed for use in the summertime 'fogging' actions: Cypermethrin, Deltamethrin32, D-Phenothrin33, Permethrin and Resmethrin34 (p.9, table 2 in the Programme). Phenothrin is especially toxic to cats35, bees36 and aquatic organisms37. Resmethrin is particularly poisonous to fish, also to birds, and is potentially harmful for humans38. It has been banned from sale in the United States since 201539.

BEES: All the poisons named here are toxic to bees. As long ago as 1998, Permethrin, d-Phenothrin and Resmethrin were included in a list of insecticides known to be particularly harmful to bees, with effects lasting even some time after application40.

RE THE WARNINGS AND ANNOUNCEMENTS. We are talking here about very dangerous substances, yet warnings are minimal: Jelsa Council places a letter from the firm which carries out the poison spraying on the Council's public notice boards. Stari Grad announces it on its website. There is no warning through the media, nothing via the Tourist Offices. Beekeepers are not given special warning, even though they stand to suffer loss. The warnings are not given in any language other than Croatian, even though the spraying takes place during the high season when Hvar is teeming with foreign tourists.

Local citizens and visitors have the right to be fully informed about the spraying programme. There should be public announcements, detailing the substances to be used and their possible adverse effects; the complete map of the route the 'fogger' will take; the method of administering the spray; and the precise timing of the action.

Local authorities which order the 'fogging' actions are duty-bound to inform local inhabitants and guests through all available channels, and in all relevant languages.

Public warning - but did anyone notice?

CONCLUSIONS

The insect suppression programme as carried out on Hvar over the past few years is potentially damaging for human health, also for animals, birds, non-target insects and the environment. The programme is not achieving its aims. The way in which it is being carried out is irresponsible. not transparent, and on many counts unacceptable.

WE RECOMMEND:

Given that the risks of infectious diseases from mosquitoes are small, while the risks of spraying poisons over public areas are much greater, the current programme of summer spraying should be stopped as a matter of urgency, and alternative methods of controlling unwanted insects should be explored, as allowed for in the Regulations governing compulsory insect control.

A tactic: poison companies use cartoon images to mask the serious risks from mass insecticide spraying

© Vivian Grisogono MA(Oxon) 2017, amended September 2021.

* Original: "program dezinsekcije kao mjere zaštite pučanstva od zaraznih bolesti provodi se kako bi se suzbila ličinka komaraca te uklonili uvjeti za razvoj i razmnožavanje, a time smanjila šteta za okoliš i zdravlje ljudi."

FOOTNOTE: For more details about the pesticides used on Hvar, their possible adverse effects, and up-to-date information on their EU approval status, see our articles 'Pesticides and their Adverse Effects' and 'Pesticide Products in Croatia'. For an explanation of the approvals processes in the EU and Croatia, see 'Pesticides, Laws and Permits'

POISON SPRAYING ON HVAR: REFERENCES

1. Gjenero-Margan, I., Aleraj, B., Krajcar, D., Lesnikar, V., Klobučar, A., Pem-Novosel, I., Kurečić-Filipović, S., Komparak, S., Martić, R., Đuričić, S., Betica-Radić, L., Okmadžić, J., Vilibić-Čavlek, T., Babić-Erceg, A., Turković, B., Avšić-Županc, T., Radić, I., Ljubić, M., Šarac, K., Benić, N., Mlinarić-Galinović, G. 2011. Autochthonous dengue fever in Croatia, August–September 2010. Eurosurveillance, 16 (9).

2. Pem-Novosel, I., Vilibic-Cavlek, T., Gjenero-Margan, I., Kaic, B., Babic-Erceg, A., Merdic, E., Medic, A., Ljubic, M., Pahor, D., Erceg, M. 2015. Dengue virus infection in Croatia: seroprevalence and entomological study. New Microbiologica, 38, 97-100.

3. Barbić L, Listeš E, Katić S, Stevanović V, Madić J, Starešina V, Labrović A, Di Gennaro A, Savini G. 2012. Spreading of West Nile virus infection in Croatia. Veterinary Microbiology. 159(3-4):504-8.

4. European Centre for Disease Prevention and Control. (Provides regular updates on the spread of communicable diseases in Europe)

5. Weill, M., Lutfalla, G., Mogensen, K., Chandre, F., Berthomieu, A., Berticat, C., Pasteur, N., Philips, A., Fort, P., Raymond, M. 2003. Comparative genomics: Insecticide resistance in mosquito vectors. Nature 423: 136-137 (8 May 2003)

6. Owusu, H. F. Jančáryová, D., Malone, D., Müller, P.. 2015. Comparability between insecticide resistance bioassays for mosquito vectors: time to review current methodology? Parasites and Vectors 8: 357

7. Aguirre-Obando, O. A., Pietrobon, A. J.. DallaBona, A. C., Navarro-Silva, M. A. 2015. Contrasting patterns of insecticide resistance and knockdown resistance (kdr) in Aedes aegypti populations from Jacarezinho (Brazil) after a Dengue Outbreak. Revista Brasileira de Entomologia 60:1 94-100 (January–March 2016)

8. EPA Information Sheet. 2016. Pyrethrins and Pyrethroids. (information on the use of pyrethrins and pyrethroids as insecticides, the current reevaluation of this group of pesticides in registration review, and previous assessments, decisions, and risk mitigation efforts.)

9. Beyond Pesticides. 2001. chemicalWATCH factsheet: Synthetic Pyrethroids.

10. Walters, J.K., Boswell, L.E., Green, M.K., Heumann, M.A., Karam, L.E., Morrissey, B.F., Waltz, J.E. 2009. Pyrethrin and Pyrethroid Illnesses in the Pacific Northwest: A Five-Year Review. Public Health Reports 124 (1): 149-159

11. Ingram E.M., Augustin, J., Ellis, M.D., Siegfried, B.D. 2015. Evaluating sub-lethal effects of orchard-applied pyrethroids using video-tracking software to quantify honey bee behaviors. Chemosphere 135: 272-277

12. TOXNET Toxicology Data Network (U.S.National Library of Medicine). Cypermethrin.

13. PARASITIPEDIA.net. updated 2017. CYPERMETHRIN, safety summary for veterinary use.

14. Cornell University, (Extoxnet). 1993. Pesticide Information profile: Cypermethrin.

15. PubChem Open Chemistry Database. 2005. Cypermethrin.

16. Aggarwal, P., Jamshed, N., Ekka, M., Imran A. 2015. Suicidal poisoning with cypermethrin: A clinical dilemma in the emergency department. Journal of Emergencies, Trauma and Shock. 8:2 123-125.

17. U.S. Environmental Protection Agency Office of Pesticide Programs. 2016. Chemicals Evaluated for Carcinogenic Potential. Annual Cancer Report.

18. World Health Organization. 2006. "International Program on Chemical Safety, Environmental Health Criteria 92: Permethrin."

19. U.S. Environmental Protection Agency. 2002. "TRI Explorer: Providing Access to EPA's Toxic Release Inventory Data."

20. U.S. Environmental Protection Agency. August 2009. Permethrin Facts.

21. Hoffmann, M., Meléndez, J.L., Ruhman, M.A., 2008. Risks of Permethrin Use to the Federally Threatened California Red-legged Frog (Rana aurora draytonii) and Bay Checkerspot Butterfly (Euphydryas editha bayensis), and the Federally Endangered California Clapper Rail (Rallus longirostris obsoletus), Salt Marsh Harvest Mouse (Reithrodontomys raviventris), and San Francisco Garter Snake (Thamnophis sirtalis tetrataenia). Environmental Fate and Effects Division Office of Pesticide Programs, Washington, D.C. 20460

22. International Cat Care. Permethrin Poisoning in Cats.

23. U.S. Centers for Disease Control (ATSDR). 2003. "Toxicological Profile for Pyrethrins and Pyrethroids."

24. U.S. Environmental Protection Agency. 2006. "Reregistration Eligibility Decision (RED) for Permethrin."

25. U.S. Environmental Protection Agency. 2007. Permethrin & Resmethrin (Pyrethroids), Toxicity and Exposure Assessment for Children's Health. TEACH Chemical summary.

26. U.S. Environmental Protection Agency. 2008, revised 2010. Reregistration Eligibility Decision Document for Tetramethrin.

27. Thoreby, E. (author), Williams, M.M. (editor), Lah, K. (updater) 2011. Tetramethrin. Toxipedia.

28. Scottish Environment Protection Agency. Azamethiphos. Scottish Pollutant Release Directory.

29. University of Hertfordshire. Azamethiphos. Veterinary Substances Database.

30. Pesticides Action Network (PAN) Europe. 2006. What substances are banned and authorized in the EU market?

31. Muhomor. 2017.  Muhomot je insekticid topiv u vodi. Djelatna tvar: Azametifos u koncentraciji 10%. Genera, Jedna komapnija za Jedno zdravlje.

32. PubChem, Open Chemistry Database. 2017. Deltamethrin.

33. PubChem, Open chemistry Database. 2017. D-Phenothrin.

34. US EPA Archive Document. 2007. Permethrin and Resmethrin (Pyrethroids). TEACH Chemical Summary.

35. Parasitipedia. 2017. Phenothrin: safety summary for veterinary use.

36. US EPA. 2008. Reregistration Eligibility Decision for d-Phenothrin.

37. WHO/FAO 1994. d-Phenothrin. WHO/FAO Data Sheet on Pesticides no.85.

38. PubChem Open Chemistry Database. 2017. Resmethrin.

39. US EPA. 2011. Permethrin, Resmethrin, d-Phenothrin (Sumithrin®): Synthetic Pyrethroids for Mosquito Control.

40. Alabama A&M and Auburn Universities. 1998. Protecting honey bees from pesticides.

You are here: Home poisons be aware Insect spraying: rethink needed

Eco Environment News feeds

  • Almost all countries failing to meet mark for PM2.5, tiny particles expelled by vehicles and industry that can cause health problems

    Only seven countries are meeting an international air quality standard, with deadly air pollution worsening in places due to a rebound in economic activity and the toxic impact of wildfire smoke, a new report has found.

    Of 134 countries and regions surveyed in the report, only seven – Australia, Estonia, Finland, Grenada, Iceland, Mauritius and New Zealand – are meeting a World Health Organization (WHO) guideline limit for tiny airborne particles expelled by cars, trucks and industrial processes.

    Continue reading...

  • Court of appeal’s removal of ‘consent’ defence means defendants on trial for criminal damage can no longer use it in England and Wales

    It took a matter of minutes in the court of appeal, where demonstrators were strangely absent, for the dial to shift once more on the rights of protest in England and Wales.

    The decision taken on Monday by the court of appeal to, in effect, find in favour of the attorney general, the Conservative government’s premier legal officer, has removed a defence for climate protesters that had been available on the statute books since 1971.

    Continue reading...

  • Academic experts also criticise UN Food and Agriculture Organization for dismissing alternative proteins

    The omission of meat-eating reduction from proposals in a UN roadmap to tackle the climate crisis and end hunger is “bewildering”, according to academic experts.

    The group also criticised the UN Food and Agriculture Organization’s report for “dismissing” the potential of alternative proteins, such as plant-based meat, to reduce the impact of livestock on the environment.

    Continue reading...

  • Perhaps our government imagines bulldog spirit will protect us from the dangerous substances that Europe rules unsafe

    It’s a benefit of Brexit – but only if you’re a manufacturer or distributor of toxic chemicals. For the rest of us, it’s another load we have to carry on behalf of the shysters and corner-cutters who lobbied for the UK to leave the EU.

    The government insisted on a separate regulatory system for chemicals. At first sight, it’s senseless: chemical regulation is extremely complicated and expensive. Why replicate an EU system that costs many millions of euros and employs a small army of scientists and administrators? Why not simply adopt as UK standards the decisions it makes? After all, common regulatory standards make trading with the rest of Europe easier. Well, now we know. A separate system allows the UK to become a dumping ground for the chemicals that Europe rules unsafe.

    George Monbiot is a Guardian columnist

    Join George Monbiot for a Guardian Live online event on Wednesday 8 May 2024 at 8pm BST. He will be talking about his new book, The Invisible Doctrine: The Secret History of Neoliberalism. Book tickets here

    Continue reading...

  • Installations must speed up 11-fold as advisers say latest changes to scheme likely to make 2028 target even harder

    The public spending watchdog has criticised the slow pace of the government’s heat pump rollout just days after ministers postponed an important scheme designed to increase the rate of installations.

    A report by the National Audit Office (NAO) has found that heat pump installations would need to accelerate 11-fold if the government is to reach its target for 600,000 heat pumps installed in homes every year by 2028.

    Continue reading...

  • Ballachrink, Isle of Man: My monthly bird survey started so slowly that I nearly gave up – I would have missed a ‘first’ for this site if I had

    Quietly opening the shutters of the hide, I have before me a “lake”, which almost anywhere else in the world would be termed a humble pond. I am smug to have the whole reserve to myself and settle down, marvelling at seeing the same view twice at once, reflected in the serene, mirror-flat water.

    Each month, I and thousands of like-minded volunteers, undertake bird surveys across the country for the British Trust for Ornithology. At first glance, my visit today appears to be a disappointment. After five whole minutes, I haven’t seen a single bird on the lake. Dejected, I consider moving on, but my instinct tells me to sit for a while.

    Continue reading...

  • A traditionally male-dominated industry is being quietly transformed by an influx of talent who don’t fit the stereotype

    Back in the 1970s, Holly Collins was studying for her A-levels in Sussex. While her friends sent off their university applications, she wrote to the Royal Agricultural College asking for an entry form, hoping to follow her dream of becoming a farmer.

    “They wrote back with the following answer: ‘Dear Miss Collins, we do not admit women.’”

    Continue reading...

  • GPs with convictions over protests face tribunals to determine whether they can keep licence to practise

    Dr Sarah Benn has long been concerned about the climate crisis, diligently recycling until she was “blue in the face”. But the rise of the climate activist group Extinction Rebellion in 2019 inspired her and her husband to go further. “We thought: well, if we don’t do it then who else is going to?”

    While working as a GP near Birmingham, Benn became increasingly involved in direct action over the next few years, and once glued her hand to the door of the Department for Business, Energy, and Industrial Strategy in protest at the government’s inaction on the climate.

    Continue reading...

  • Caistor St Edmund, Norfolk: On a day spent picking horse poo from the pasture, I welcome this Celtic charm

    I am up to my ankles in thick mud, scraping horse poo up from a waterlogged pasture. It’s been a tough winter for anyone who spends lots of time outdoors. East Anglia has recorded its wettest (and warmest) February on record, with endless drab days of persistent rain.

    Poo-picking helps to keep the pasture palatable and reduces the parasitic worms that can infect the horses, but it’s hard work. My wheelbarrow is nearly full of muck, and the hill looms. I wonder if I may give up halfway, stuck in mud, my lifeless body waiting to be found. Yet I push through the mire and take a breather halfway, heart racing.

    Continue reading...

  • Researchers found that the Victorians brought so many seeds and saplings to Britain that experts say the giant redwoods now outnumber those in their US homeland

    Three giant redwoods tower over Wakehurst’s Elizabethan mansion like skyscrapers. Yet at 40 metres (131ft) high, these are almost saplings – not even 150 years old and already almost twice as high as Cleopatra’s Needle.

    “At the moment they’re some of the tallest trees in the UK and they are starting to poke above the forest canopy. But if they grow to their full potential, they’re going to be three times taller than most trees,” says Dr Phil Wilkes, part of the research team at Wakehurst, in West Sussex, an outpost of Kew Gardens. One or two of these California imports would be curiosities, such as the 100-metre high redwood that was stripped of its bark in 1854 and exhibited to Victorian crowds at the Crystal Palace in south-east London, until it was destroyed by fire in 1866.

    Continue reading...

Eco Health News feeds

Eco Nature News feeds