What size grates are alright for adult rats to walk on without there being no problems?
Yes, the things we do for our little fury loved ones! You'll figure it out eventually, in what works for you. I originally didn't want to use fleece in the beginning and I was using card board (collecting boxes and cutting them into the size of the grates). It drove me insane as I was cutting and cutting and changing them every second day. It didn't work for me. So I moved to fleece. I now have three sets for each grate that I cut to size. Soooo much better and easier to maintain.I find it difficult to do this because of how my cage is set out. I'm going to hAve to take it apart to sort it out.
things you do for your little rat friends.