Our dogs get on the furniture when we are not home. What can we do?

read through your site and got a great deal of information. You addressed the problem of dogs jumping on the furniture when you are around and we don't have a problem with that, save rare occurrences of putting a paw up to get attention and we correct that. Our problem is when we leave the house at least one of the dogs and probably both think that the furniture is fair game. We have come home and discovered the one dog on sofas and chairs and even leaping onto the coffee table before leaping to the floor. She KNOWS she's been "caught." How can we enforce the rules when we are not home to see the behavior?

Thanks,
Julie