I have had Pudgey for a few months now and he came to me with a beautiful coat of fur and clear eyes. The picture of health. He also came with all the accessories needed for a cat - including scoopable cat litter.
When that ran out I still had some of the cheap stuff so I used that up but I liked the scoopable kind so I bought it. (I had never tried it before) However I bought a different brand.
About a month later I noticed a spot on Pudgey's back leg. Nothing major but I took note of it. About a week after that I saw an ugly, red oozing hot spot on the inside of his other back leg. At first I was puzzled as to the cause but I knew he didn't have fleas and I couldn't figure out what caused it.
I started treating it with tea tree oil and I could tell it was working but when I quit the spot came back. Then I started thinking about any changes I had made to Pudgey's routine and the only thing I could think of was the cat litter.
So I changed back to the cheap stuff. The hot spots are just about gone now. He also had a little muck in his eyes. That has cleared up as well. I don't know what was in that new brand of cat litter but whatever it was he coudn't tolerate it.