I need advice. I have a seven year old sulcatta Ive had since it was born. He has gotten about 30 lbs now. I live in MIchigan where he roams freely in a big back yard mid April though now. During winter he stays in a 8 ft by 3 horse trough in my basement. Last winter I used Timothy Hay for a substrate but it got dusty in the basement. Not sure what to use this year any suggestions would be great. My friend wondered if kitty litter could be used but I have no idea if it would harm the tortoise. YEars passed I used commercial repti bark but it is very expensive to fill the horse trough with. Thanks for the input in advance

