Help!! My five month old female sprocker spaniel has suddenly in the last week started urinating on the rug or duvet cover in the evening. She was fully toilet trained before this and throughout the day will tell us when she needs to go out for a wee. She’s walked in the evening too and wee’s and poo’s on the walk. But suddenly this week, in the evening only, she urinates just once on the rug or duvet. How can I stop her from doing this?