Just wanted to share my story. So somehow my cat got fleas she is an indoor cat never been outside i thought my house was fairly bug free occasionally see a spider like the norm. So petting my cat one day i saw a little bug crawling in her hair never seen one before. ive never used a flea treatment on my cat who ive had for 12 years but decided better safe then sorry so looking at my flea care options i opted for the hartz flea drops was cheap and my thinking they are all prob about the same thing. So my happy cat who has never seen a flea before this moment got her first treatment ever. i have never used a medical treatment on my cat other then the routine stuff the vet gives to prevent rabies or whatever else they give them. within the hour my cat was sitting in my sons room staring at his bed. she has not one time in my sons 5 years of life visited his bedroom so this was unusual, later found her just meowing and crying also something she does not do and very spaced out. every evening me and betsy watch tv she comes when shes called and hangs out this is a 12 year routine this night she did not come to me she did not sit next to me now laying on my kitchen floor not being able to lift her head. didnt think much of it thought ok maybe there is a short little reaction to this stuff itll be fine by tomorrow. the next day betsy in the exact same spot on the kitchen floor had not ate anything. my cat will eat until you quit feeding her also unusual behavior, her entire demeanor had changed didnt turn to look at me her ears did not move when i called her name. starting to freak out figured had to be this flea product. My cat if you didnt know any better would assume she was dying i knew her days were numbered. thank the lord 4 weeks later my cat is still alive her entire personality has changed shes still very spacey. the area where i had put the flea drops her hair is missing it fell out behind her shoulders. my cat now has fleas all over her this product did nothing and now im terrified to treat my cat with anything else. ive been giving her a bath with dawn soap every week and using a flea comb nightly to remove as many fleas as possible. even saw on one site people had used vinegar to rid the fleas so ive tried that as well. hasnt really worked the soapy water and flea comb seems to be working. I wish i would of investigated this and used a vet reccomended product. im not sure what the future holds for my cat but she is an entirely different animal who has slowly crawled away from her death bed over flea drops. I miss my cat this is a terrible product.