I noticed that my cat had fleas earlier this morning, so I went out to get some flea medication. I couldn’t afford the more expensive stuff, so I settled for Hartz. After about 10 minutes, my cats starts running around and meowing, and completely avoiding me and hiding, which is completely different from her usual behavior. She started panting, and I decided to take her to the vets. They explained that this is unfortunately a typical reaction for this brand. I have never been more distressed than when I thought I was gonna lose my kitty. Please, if you love your pets, don’t use this poison on them.