https://www.theguardian.com/environ...OLDDSl4BSVRTPqJ7xa4U0raojq_xhueVqa-DFb5HcUoww Guardian article on how spot on flea treatments are polluting our rivers. The insecticides used are extremely potent and highly toxic. To me this is really concerning. I have stopped using spot ons in recent years because Nooka hated them, and I found the tablets were much easier to use for all the dogs and didn't like having the stuff on their skin to be honest. I only really treat if I see fleas too, so they aren't over-used. And this article is promoting the same, only use them when you actually need to, and ban Fipronil and Imidacloprid based treatments (which have been banned for use on farms for a few years now).