Carpet cleaning is an easy answer. In order to do a good job you need a truck mounted steam extractor, and knowledge of chemical composition of both stains and products used to treat them. Here in northern Minnesota we are lucky enough to have a steam cleaning company that not only cleans carpet (and rugs, tile, grout, air ducts, etc.), but they've taken their chemical composition knowledge and created a commercial product line for rug cleaning. You can learn more here.
Windows, on the other hand, seem like a no-brainer. Here's the thing - we don't LIKE doing windows - they inevitably look great when we are done, the client comes home with the sun in a different position and suddenly streaks appear in new places. It is a tough job, and another one of those best left to the professionals (of window cleaning). We love messes - not window cleaning. We want our clients to have the best service possible, which is why we suggest they contact a company that deals specifically with windows, like Exterior Professionals.
Happy fall cleaning, my peeps! Do you have cleaning tasks you hate doing and outsource? Please comment below - I'd love to hear how others deal with them!