If have a cat or multiple cats and would like to avoid pyrethrin / pyrethroid - based products, which I recommend to any cat owner, here are some of the safer and most - effective flea control products for cats.
Avoid all flea products labeled for use in cats if they contain any of the following active or inert ingredients: allethren; cypermethrin; deltamethrin; etofenprox; fenvalerate; fluvalinate; permethrin; phenotherin; pyrethrin; tetrametrin.