My 8 year old male Boston Terrier and I have recently moved in with 4 new roomates (1 male human, 1 male pug and 2 male cats). Since we moved he has, on an almost daily basis, peed on my roomates toilet. As can be expected this is not going over very well.
He doesn't pee anywhere else in the house. He is crate trained and is crated when we are out, so he only pees when we are home. We have taken to keeping him out of my roomates bathroom, which works, until the bathroom door is invariably left open and then he pees almost immediately.
I am open to any and all suggestions on how we might deal with this.
I'm tired of scrubbing the floor under the toilet.
The only ways I can think of to break him of the habit is to either give him no access (baby gate?) and/or make sure he realizes that room is not a potty area.
For some reason he believes that it is ok to pee there. It could be anything from he doesn't know the rules to he is smelling your room mates urine. Make sure you clean the area with an enzyme cleaner to remove all of the odor. Not going to tell you to tell your room mate to have better aim if the later of what I said proves to be the problem.
You need to supervise him 100% of the time and correct him when you catch him in the act. That doesn't mean finding the mess then punishing him after the fact. If you punish him after the " deed" the only thing he knows is your mad. He won't make the connection you don't want him to potty in that area.
If you are having a hard time keeping track of him while you are in the house then either tether him to you or block him into whatever room you are in with a baby gate. Also remember that just because the dog was potty trained in your old home, it doesn't mean he understands the rules in this new house. You have to start from square one so there is no confusion.
edit- I forgot to mention. Have him checked out by a vet if you think it might be medical. I am leaning towards it isn't because you are only having problems in that one area. You never know though.
I wanted to give you an example of what I have dealt with.
I have a 2 year old dog. She learned house training quickly. She had one accident since she was 10 weeks old and THAT was completely my fault.
We recently opened another room in our home. The same home she was raised in. It would be foolish of me to assume she would not think it was ok to potty there. I had to open the area and watch 100% of the time. She tried to squat but I said Eh (my version of NO) If I could not watch her I closed the door. If there was a slip closing the door then it would be my fault. Maybe you need to tell your room mate if he "slips" shutting his bathroom door then he gets to slip on the yellow stuff on the floor?
I know! I know! Ignore that last advice but listen to the other. ;D
I agree with Dom. It also may be that the existing male dog or cats urinated in there at some time and so your male is marking over the urine scent and it seems to have become a habit. As Dom suggested, you need to clean the area thoroughly with an enzymatic cleaner (not just regular soap) to get rid of the urine odor. A dog can smell urine even when you can't. You need to neutralize the odor. This is accomplished with an enzymatic cleaner.
He isn't going to learn that marking is a huge no-no unless you teach him. Follow Dom's advice on supervision and corrections. Do not let the dog in the bathroom unsupervised ever. So far he is marking without anyone doing anything about it. That teaches him that it must be OK. You need to break the habit, catch him as he is going to mark and correct him.
Wouldn't it be funny if the dog was actually trying to pee in the toilet because he sees you guys doing that.... Nah!!!