Recently changed out hides to the black ones from Reptile Basics. I do believe my snakes adore them. I may never see them again...lol. Their previous hides (the fake rocks from Petco) I could at least see part of them in there. These great new black hides have the offset entrance, so they can become invisible. Great product! These are the best. Snakes went right in them, I was worried about them stressing from the change, but no, they just dissappeared. I haven't seen them in days...