Brandon as long as you're housing in a way that's appropriate to the size and species of snakes, tell them to kiss your butt. We have three boas here - one is in a large plastic tub, one is in a larger glass tank, one is in a custom enclosure. Guess what - they all eat, they all are thriving so it seems as long as their needs are met, they pretty much could care less what material their home is made of.