He started this habit at night but now it's in daytime too. I tried so many things colored tape marking floor and toilet but for some reason he's just not seeing it. Nights I sleep lightly so when I hear him getting up, which is about 3 to 4 times, I can guide him to bathroom so not to have a suprise. He is so confused he refuses to go to toilet. I even have a waiste paper basket so he can pee. Sometimes it works. I have a commode that has not worked yet! Very challenging. Now I have to keep my eyes on him. He does have some good days but I can't trust him. Cleaning pee out of the heating vent which I did not know he did, wow the smell when the heat went on. Please did any one else have this problem?