My 8 year old miniature poodle has started acting out in the last week or so. Every time we leave to do something like go to the grocery store, or even when we ran down to the laundry room (gone for 5 minutes), she pees or poops in the house. We take her out before we leave to go most places, but even when we do that, she still waits for us to leave before marking. Even when we're home, if we don't keep the bedroom door closed, she'll sneak into the room and mark on the bed. She used to do this when she was younger, but since my husband and I took her (she was with his parents from the time she was a puppy until then) it hasn't been a common occurrence until now.
Any advice? We've started keeping her in a kennel when we go out, but I hate having to do that for extended periods of time.