I have 3 big boys....17, 19 & 22#. Their litter pans are in a room in the basement. 2 of the large cement mix tubs and 4 of the smaller ones. They're tough, sturdy and reasonably priced. Under $20 for the large.
I just found this and ordered 8 bags. #20 bag is $17 with free FedX shipping. I am impressed with the description and the price comes out to $7.25 for 10# which isn't too bad. About Beth Anne’s Finest | Beth Anne's Finest All-Natural Cat Litter