My 12 yr old cross collie has been urinating/defecating in our house. Previously it happened on the odd occassion, for example if he was unwell. Now it is happening several times a day, even if we are in the house. He is out regularly and hasn't had any change of food or water levels. This is really beginning to ruin the pleasure he brings us as we are anticipating what is waiting for us everytime we come in the door or get up in the morning. The floor is having to be steam-cleaned 3-4 times a day. Help!!!!!