Professional Persian Cat Breeder. Hart’s flea powder burned my show cats eye. This is my prize show male stud cat. I WAS VERY CAREFUL NOT TO GET THE POWDER IN HIS EYES. However, the dust did get in his eye despite my trying to be cautious, and it caused a severe chemical burn to the globe. I was very afraid my boy would loose his eye, and I felt horrible every time I had to clean the wound and treat it. Horribly painful for him, but antibiotics and extensive care saved my boys eye. Hartz flea collars burn holes in the skin in a matter of days. Hartz flea drops burn holes in the back of their necks. Thinking the powder would be more mild of a treatment while treating the rest of the house, I used this on my cats. The powder was ineffective against fleas, as well as the drops, and caused this terrible problem. Please do not use Hartz products. I eventually solved the flea problem with flea bombs and Advantage, which also burned one of 10 of my cats but solved the problem. I am uncertain if my boy will be able to go into the show ring and earn his titles, but thankful his eye was saved. The photo shows a one month progressive healing. Had I not been a professional breeder with medical background with antibiotics and eye treatments on hand, I am not sure the outcome would be this way.