Hey folks, I was wondering what you guys that have beetles set your skulls on to let the beetles work. I seem to remember seeing that some people put them on plywood so they don't sink or something to that effect. I have been placing them directly on the substrate. I use the care fresh pet bedding, but it seems to stick really bad on the bottom and I'm wondering if it keeps the beetles from being able to get to the skull on the underside. For instance I put in a deer head two days ago and for the most part the top is clean but when i picked it up the substrate was kind of "caked" on the bottom so i knocked it off and layed it on it's side. Just wondering if I would benefit from putting some sort of platform in there? Thanks in advance!