My cat Peed on my hardwood floor.

I tried the hydrogen peroxide solution before and it worked really well. I tried it again and the floor bubbled. What do I do? How do I fix the bubbling?

If you have pre-finished flooring it would be easiest to replace the damaged flooring. If you have site finished flooring you will need to scrape off the bubble and stain or finish the surface again. It is a relatively long process, at least a whole day's work.