My cat was accidently exposed to a cat kiiling chemical called permethrin accidently due to the fact it wasnt clearly labelled on the packet of a flea application it is perfectly safe for dogs but is extremely lethal to felines. she started showing symptoms 9 hours after exposure but in 1 hour she had 3 fits i rushed her to the emergency vets at 3am and after a lengthy and expensive time i made the decision for her to be put to sleep becuase she was in alot of distress even after £157 of treatment. my other cat which i cleaned immiediately when i got home kept me company all night as i was worried he might have the same reaction its been a few hours and touch wood seems ok so far. but i just want to let people know what the danger is of this product and apart from the obvious sentimental emotions that come with losing a loved family pet is the financial cost it can have and in my case to no success.