I bought a hartz 040775Ultra Guard Flea & Tick Collars for Cats (1 Each)1 from Puritan.com in December . I just decided to use it on my cat since she had flea last year and the vet suggested to use flea med once every half a year. I opened it then the fine powder started to come off and I smell a weird scent but still put it on to my cat.then started to read the direction.however the direction conflicts by itself it says use on cats only and it’s poisonous to human and domestic animals. All I know is cats are domestic animals.then I searched on amazon and found this site through some review from there. Thank god I took it off of my baby before it was too late and I gave her a bath thoroughly. Then guess what my finger which used to touch the collar started to burn and itch. Can’t even imagine if my cat wear that for very long ……… I just wanna know is there a way to shut down the cruel company hartz ????????????