Clean litter boxes are the easiest way to prevent non-medical urination issues.
Besides the cleanliness, the number of litter boxes is also very important. As a rule of thumb, you should have the number of cats, plus one in litter boxes. So, if you have two cats, you should have three boxes.
You should clean your box at least once a day. You can replace the litter completely according to the instructions, or do like I do - just when the cats start rejecting it, which is never, if you keep in the habit of cleaning it well and often. It surely saves you some money!
Well, without further ado, here you go: