I used this product as well on my five year old cat. The reaction was immediate. She ran and hid and started crying so I quickly picked her up and took her for a bath. I was sick as I could see it was obviously the product that I had put on my baby. So glad I caught it right away as I’ve read some of the other posts and am aware that others were not as lucky as I was. My heart goes out to each and everyone of you who suffers the guilt of using this product on your animals. sadly within a year of this my cat developed problems with her kidneys and had to be put down.