Originally posted by Breezy Top Cat
My 9 month old Siamese cat, Oliver, poops on the rug in front of the litter boxes. He started this about 3 mos ago, so we added a 2nd larger litter box. Both are covered boxes. This didn't help so then we tried scoopable litter in one and regular litter in the other. He is the only cat we have indoors and he is declawed and stays in full time….
Here is my guess…you took your cat to the vets at 6 months old and your vet suggested a standard neuter/declaw package. Then within a few days or weeks of his declaw Oliver developed this litter tray problem Am I right ?

Sadly what vets ‘forget’ to tell cat owners is that declawing carries a risk of the cat developing behavioural problem, the commonest problems are elimmating outside the litter tray and biting.

I strongly suggest you get Oliver feet x-rayed by another vet to see if the original declawing was done properly asap.

The declawing operation cuts off the nail, nail bed and the top section of the toe and if the bone splintered during the operation leaving bone fragments in the remaining toe tissue, this could be causing him pain leading to the litter tray problems. Sometimes a second declaw with a better vet may help relief the problem.

….and I clean the boxes out every day or every other day. We are now in a desperate situation and even though I have cleaned the rug and do so each time, my computer room rug needs to be replaced (where he is confined at night so we can sleep). His filthy litter box habits have him walking on thin ice. He doesn't do it every day but sometimes he does--there is absolutely no pattern to it. Sometimes he will do it two times in one day or he will wait about 3 or 4 days before he will do it on the rug again. There is plenty of stools inside the litter box so he is using it.
Cats need a clean box to use, if the box has plenty of poo in it the box is too dirty and of course he won’t use it until you clean it. Try scooping twice daily or straight after he uses the box. Every two days is not often enough.

Another problem-- He has an undescended testicle, so the vet told us to wait to see if it would come down on it's own before neutering him. It needs to be surgically removed from the abdomen and I am not so sure I want to sink any more money into this guy.
All cats develop problems during their 20 year life time and require various levels of vet care throughout their lifetime. As a cat owner you have to pay for all necessary vet care when your cat needs it, that is basic cat care 101. If you can afford an unnecessary and expensive operation like a declaw you should have the money for this health related operation that is actually beneficial for your cat. Please consider setting up a saving account for Oliver’s future vet bills or insure him with pet insurance, so money will not be an issue for future vet care.

I will not tolerate a cat messing in the house. Any suggestions? He is on his way down the road, but I feel like no one else will accept this behavior either and it wouldn't be fair not to mention it to them.
If this resulted from having him declawed it is your responsibility to look after this damage cat for the rest of his natural life. I doubt you were/are educated in the problems of declawing before you had it done but this is not your cat’s fault, why should he be the one to suffer.

I tried bringing one of my barn cats into the house for company since I recently heard that Siamese cats need companions, but this hasn't helped either. After 7 days he is just growling at the other cat (a neutered male) but less and less each day.
Introduction have to be completed very slowly and supervised to be successful. Try this method to introduce him to his friend.
http://www.piftails.com/introducingnewcat.html

We got Oliver as an 8 week old kitten and he has always been very VOCAL to the point that we can't sleep because he runs thru the house at night screaming like he is hurt or something. We recently tried leaving him loose at night again and he woke us up 6 times within an hour with his screaming and running from room to room.
Siamese cats are very vocal this is a characteristic of that breed, if you wanted a quiet cat the last breed you would buy would be a Siamese. Where did you adopt/buy him from, I am surprised that no-one told you about this issue before letting you adopt him.

This cat has 3 MAJOR issues - his terrible litter box habits, an undescended testicle, and his screaming at night
This cat is suffering from being ill, declawed and misunderstood, none of which is HIS fault.
I hope you address each issue in turn starting with the paws and try and help this poor cat, as he has been though a lot in the last nine months.