How often do you clean your enclosures?

[viridix]

I thought the last thread lost its main point.

I have two kinds of enclosure setups:
1. Natural; a very nice display setup.
2. Generic; paper towels.

Natural:
The natural setups can go for quite a while without being deep cleaned. I use sand, aspen, bark, etc. to make a nice and appealing display setup. At every defecation I spot clean. Spot cleaning for this particular setup is fine because the substrate soaks up the liquid and allows for easy removal of waste. I change the substrate every 3 to 6 months.

Generic:
Everytime a water bowl is overturned or an animal defecates is when I change the substrate. This is a must for a generic setup because this setup lacks a substrate the can soak up fluids. There isn't really a need to deep clean (because it's done all too much; which is why I don't) but I'd say every 3 to 6 months is good.

Dustin