OMG, I've found this tremendous product that really REALLY works to get rid of litter box odor. I've tried everything including several litter products with odor engrossing things, etc.. Nothing works like this little carbon odor absorber.
Here's a associate to the website for Innofresh products and Fridge-It:
http://www.innofresh.com/Products/fridge it.htm
It does check out great. Try contacting them to see where it's sold in your area.
I'm looking for a odour free product called FRIDGE IT activated carbon odor absorbers. It is a unpretentious purple cube and a fantastic odor absorber for litter box. Anyone know of it and have reach-me-down it? I've used it for two cats and really think it works punter than
I've never heard of that, but activated carbon is casually to find, in the fish isle. Its used as a filter for salt and different water tanks, put it in a knee high with a rubber confederate to keep the carbon in, and there ya go! Not as pretty as the purple cube, but I'll bet
Miscarry Quincy Yu introduces Clean+Green Natural Litter Odor Eliminator + Cleaner and demonstrates how relaxed it is to use.
Take in www.pawsitivelycleanpet.com - Destroys tough pet odors and helps release pet hair. Kill pet odors in your home with pew! From stinky dog ...
Now At at The CatMouse Electronic Litter Box Odor Eliminator ActiveForever 
@ Litter Box Odor Eliminator have the same straight disinfection, ionizing power as sunshine 
CatMouse Electronic Litter Box Odor Eliminator is an electronic air sanitizer and deodorizer 
CatMouse Electronic Litter Box Odor Eliminator is an electronic air sanitizer and deodorizer 
Litter Box Odor Eliminator have the same usual disinfection, ionizing power as sunshine