I have 7 cats and 9 litterboxes. You need 15 litterboxes. Putting a pad down in front of the litterbox is not going to solve the problem. They probably feel they are allowed to pee on it. Clean the litterboxes a minimum of twice a day, in your case probably 3 times, since you have so many cats. And, once you find out who the real offenders are, try Clomicalm. It's a medication for behavior problems and since I started my offenders on it, there have been no "accidents" around here. I know many people don't like to medicate their cats, I being one of them, but I also don't want to resort to living in a giant litterbox because my cats have bad manners. Clomicalm saved us. If not that, Prozac is getting great reviews for just this problem. Your tearing out carpet, etc. will help but it's the cats' behavior that really needs changing and, if it doesn't, they'll ruin your laminate and walls and furniture again. However, you do need to find out if it's a physical problem w/one or more of your cats. If only one has a UTI, for example, and pees somewhere, the others will pee there or nearby to cover up that smell. Good luck. It's tough, I know.