www.newscientist.com/article/2583... Unfortunately, you need to be a subscriber to read this. In essence, it says we really, really need to cut back on flea and tick medicine use if we want to save our biosphere. All these poisons are killing wild insects, with dangerous effects up the food chain.
Should you stop using preventive flea treatments on your pets? | New Scientist
It has been assumed for decades that tick and flea treatments for pets pose no threat to wildlife or people, but there’s growing evidence that we have got it wrong
newscientist.com
