Well, a few weeks ago I got a dog and he was suppose to be potty trained, but then instead of going to the bathroom when we take him out. He poops and pees in the house. He peed in my bed, he pooped on all the clothes in the laundry, he peed on the guest bed while a friend was sleeping in it... what can I do?
You might find it useful to use a crate. If he sleeps in a crate you can take him directly from the crate outside to potty. He can then run loose. When you are not with him put him in the crate. Once he has the routine figured the he will become more reliable in the house.