My cat had always been perfectly litter-trained, so I was shocked when I found a wet spot on my bed. The next day it happened again, while his litter box remained completely dry. Worried something was seriously wrong, I took him to the veterinarian for a full examination.

The vet performed an ultrasound, blood work, and several other tests, but everything came back normal. My cat was healthy, yet he still refused to use the litter box. After spending a small fortune on medical tests, I was more confused than ever.

About a week later, I finally noticed what was happening. He would step into the litter box, shift around uncomfortably for a moment, then jump back out without using it. The problem wasn’t his health—it was the new wood-based cat litter I had recently switched to.

The rough wood pellets were uncomfortable on his sensitive paws and underside, so he avoided the litter box altogether. As soon as I replaced the litter with a softer type, he started using it normally again, and the accidents stopped immediately. Sometimes the simplest explanation is the right one.