I can agree with similiar materials not holding moisture. However I am using a similiar product called ESU Terrarium liner in my tubs. Its great lasts a long time and washes pretty easily. I would say it depends on your enclosure and the room you keep your animals in. I keep my snakes in tubs, which as we know is huge bonus humidity wise and the room itself stays around 50% humidity or above suprisingly so it works for me. You just have to see what works. I have found a place online that sells the stuff I use very cheap and have strictly been ordering from them since I found them. It would be worth the few dollars to try it.