and you'll meet harley dufek, a professional house-flipper.r, and you can too. now sit back, relax and enjoy as home expert matt lattimore and lise simms dazzle you with the most amazing wall-to-wall cleaning system you've ever seen: the rug doctor mighty pro. >> ♪ r-r-r-r-rug doctor ♪ steamin' mad at dirt. >> hi, i'm lise simms. did you know your carpets are probably the single largest investment inside your home? and you could be ruining them without even knowing it. hey, i thought i knew how to take care of my carpets-- vacuuming, right? well, you're gonna be surprised to learn there's actually more to keeping your carpet healthy and making it last than just vacuuming. but don't listen to me, listen to our carpet care expert, matt lattimore. >> lise, it's great to see you and it's great to be here. >> nice to have you, matt. >> and i am so excited, because today we're gonna learn all about the fabulous rug doctor mighty pro. you know, most people really don't know what's going on down deep inside of their carpet. it's the dirt and the grit