I have a bunch of great birthing tubs that I love...But I notice they start chewing at the bottoms even with a ton of food, water and pieces of wood in the bottom of the cage...I loosely fixed on by using Gorilla Glue to smooth out the rough edges and fill the tiny holes that made it through to the bottom...I've read it's hazardous when wet, but nothing about when dry...Any thoughts or too risky?? Because it did what I wanted and the holes and scratches are no more, but now there is a bunch of smooth GG on the bottom that they might chew...