For litter box, I am finding that the Wonder Box disposables work really well. Found them on Amazon. We put one inside a plastic bin with a disposable plastic liner inside the bin (just in case). Litter is still cleaned daily, but Wonder Box gets tossed once a month. Seems to help a lot. Here is a link:
http://www.amazon.com/Kittys-Wonderb...dp/B000MD3MDW/
Haven't tried it yet, but OdorzOut in the bottom of the litter box is supposed to help too:
http://www.amazon.com/Litter-Additiv...dp/B000TSO20W/