It is funny cause before we really got into all the frog products we noticed ours liked ledges and since we were so new at this we didn't want to spend a lot of money. Well we had a background piece that broke and we didn't like cause the frogs could get behind it so we broke it apart and hot glued (now will use silicon) to adhere them to the glass. And the frogs love them especially the back corners where they can hide. So maybe this might help anyone that has had background or styrafoam laying around. One word of warning (as a crafter I learned this the hard way) don't spray paint styrafoam it will melt.