they can chew through the home depot tubs too, but it all depends on the RAT.if you have a chewer like I had they can chew through just about any tub.the rat i had chewed through the morter tub, and then through a sterilte birthing tub!!, needless to say her and her babies are snake food.......

p.s I screwed a piece of mesh screen over the morter tub hole and its o.k now