teacup maltese, I have a maltese also. I bet that pups a cutie. I was given advice from my vet to stop house wetting accidents. You take an empty soda can and fill it with about 10-15 pennies and tape up the top. When the dog makes a accident, you put their face near the accident (so they know why you are doing this)and shake the can and say no. It works, and it works well. I have adviced many people with this method and it has workedlike a charm everytime. The dogs hate the noise and do not want to do anything to hear it.

Another thing is dogs tend to use the restroom in the same areas. You should clean to area well (i.e shampooer) and then there is products on the market that can be sprayed that is non-toxic to pets/humans that deter pets from using the restroom there. Spray it in the spots that you notice he uses. I hope this helps. Keep of posted on the progress.