How Do You Ask Someone To Leave Your Home Nicely? [POLL]

Do you ever get sucked into letting someone into your home to do a demonstration? I do! Over the weekend I let Darron the Kerbey guy steam clean my area rug and he stayed for twoand half hours. He was very polite and did an excellent job with the demonstration but I just couldn't get him to leave. I tried everything from reminding him how long he said he would stay to starting dinner in front of him. He still wouldn't leave!

It was very awkward but I couldn't bring myself to tell him to get out. Neither could my husband. My son finally told the salesmen he needed to leave, but he still didn't leave for another 20 minutes.