Association

07 November 2013

BPCA comments on recent rodenticide resistance stories

Technical Manager Richard Moseley said "cases of resistance in rats have been known for decades." A study being undertaken by the Universities of Huddersfield and Reading began around three years ago and will eventually document where the highest concentration of resistant rats can be found. "While the studies show that the resistant rat population is spreading, you can be assured our members have the skills and products to solve this problem."

The gestation period of rats is around 22 days and they reach sexual maturity by 8 to 12 weeks. That means resistant rats have the ability to multiply rapidly. "Normal rats are being killed off by poison, so these resistant species are taking their place - it's only natural that their numbers are expanding."

Some stronger rodenticides, like brodifacoum and flocoumafen, are already used by pest control companies. However the usage is limited to inside buildings only because of the potential harm these more potent poisons can have on wildlife. While admitting a balance needs to be struck, Moseley explained "rats still pose a very serious threat to humans, not purely through the diseases they carry but by chewing through pipes and electricity cables." He added "if you have a rat infestation then we'd recommend you contact a professional pest controller through the BPCA website to deal with the issue."

Source: BPCA.org.uk

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