i have a intact male shih tzu cross poodle he is about 18 months old i have had since he was about 9-10 months old when he arrived he messed in the house most nights and if left alone( only ever for 1-2 hours) but after a couple of months this stopped. over the last 2 months he is messing and weeing all the time on the furniture on the beds and if im playing cards with my husband he will do it right in front of us. he has free access to the garden and has 3 regular walks a day i really need some help to sort this out any ideas will be great thanks