What John1982 said. As long as you remove food boluses (leftovers from the bugs) then you shouldn't really have to clean the enclosure with the exception of if you ever end up finding a mite infestation with the tarantula or you see mold/fungus growing. In that case, you'd have to do a thorough cleaning of the enclosure and throw out any furnishings, but keeping the cage free of food boluses should avoid those problems to begin with.