no, not yet. i went to buy some the other day, thinking it wasnt going to be very much. but they had a little bitty bag, and it was 15 bucks. didnt have the money to spend at the time. guess i can try to get some this weekend. is there anything else that i can put in there to keep moisture. and, question of the main subject but, do they always hide?? he never comes out, never!!! when i hold him hes fine, but after i put him up, i dont see him again til i pick up his cave and hold him.