"He used to empty the litter box all the time."

She considered putting out a litter box, but decided that it would make matters worse.

One litter box was obviously not enough for 66 cats.

I position a clean oversize litter box in back window of car, which has never seemed so small.

They can learn to come when called, use a litter box, and do many different tricks.

When was last time I changed the litter box?

Sometimes there are too many cats using one litter box.

Times like this and when I have to clean out his litter box.

Our cat uses a litter box to do its business when it is inside at night.

Or they ask when he's going to clean out that litter box, because Lord knows it's been a while.