lil Laura, I used to use creek sand for cat litter, but it wouldn't contain the smell. Now, since I have moved to another state, I use "Special Kitty" cat litter. It comes in a red-25 lb bag. It has been found that although it does not have the same "perfuming" feature as the other brands, It does keep the odor suppressed much better.

Does your furkid's litter box still smell after you have cleaned it up? If it does, then I would suggest that you replace the box. Personally I keep litter plastic tubs around the house. They can be purchased for about $4.00 each from most any hardware or home and garden store..

The next item is their food. What have you been feeding them? Is it dry or canned food, also how old are your furkids?