We adopted a Jack Russell who was about 3. We are still having problems potty training him. We have 2 older dogs both who are house trained and he still pees and poops in the house. He has been neutered. Right after he eats at night he poops on the floor in about the same spot even if we let him out he waits till he comes back in to poop in here. Any ideas?

Can you describe in detail how you are attempting to housebreak him? When do you take him out, what do you do when he messes, etc etc.