I have had my dog for 5 years and she never peed in the house , but all of a sudden she started peeing on my Oriental rugs and ruined 2 runners. i took her to the vets and he could find nothing wrong with her.He told me to have a dog psycholist see her.(I need it for me not her) Anyway I got a dog crate and put her in it at night for about a week and she hasn't peed on the floor anymore. Can't figure out why she started .