We bought the most awesome thing on Wednesday. We went to City Farmers (which is a huge pet store) and bought some cat food and a litter tray for the cats. So what, a litter tray? Well this one is different. The cats have to get in it from the top where the entrance is.
The reason why we bought it is because Liam had a nasty habit of standing up while he peed and spraying all over the entrance to the old litter tray, which was shaped like an igloo. Liam also used to pee on piles of clothes (washing in the laundry), the bath mat and in the bath (which I didn't mind too much as it's easy to clean).
So in the new tray, Liam can stand up all he likes. Now I'm going to clean the tiles and grout in the laundry and hopefully they'll stay clean.
That sounds like an improvement over all I have seen.
My cat goes in the garage, but we still keep her SPECIAL box in that garage. SHE, being a girl and all does not stand up to pee, but as delicate as she "is" sometimes, especially if she has already gone there, she hesitates to enter. So, getting two or maybe all four feet
near the powdered clay goal line, she tries, but we still get a bit of projectory feline effluent against which we constantly toil.
This type of box and a handy hose might pay most of the cat shit bill.