Garden hose. Sweep the dirty water into the sump pit.

We have stained concrete floors and the trowel machine with paddles is what is used to put a steel trowel finish on the concrete in large warehouses. It is perfectly fine for your foundation contractor to use that. We have dings and divits in our floor, but we love it. There are actually leaves that got stuck in the concrete since we put our foundation in during the fall and the contractor couldn't keep the leaves off. ITs great. We have about 3000 SF of stained concrete. I'm looking for a fast way to sweep and scrub it. Large warehouse machines are too much. 15,000 sq ft/hr coverage. Looking for a commercial grade machine that will clean, squeegee and buff but haven't found one yet. That would make it much faster to clean. It is really easy to keep up, just time consuming because of the volume. Check out my building process at http://www.myhomebuildingmentor.com/blog

Go to the local hardware store and get TSP, or use dishwasher detergent granules. Use water as hot as you can get it and dissolve a couple of cups of the stuff in just enough water to make it into a solution. use a stiff bristled broom or brush and scrub it onto the soiled places, let stand , add a bit more hot water and scrub again. Then rinse, rinse, rinse, using a garden hose if you can, or buckets of hot water... you can keep repeating if you have problems, but usually one vigorous treatment is enough. best wishes

Deb: As a fellow Minnesotan, I say its too late. Don't be pressured to do something now. Theres a lot of misleading info from nobodies (like me) and pros a like. I would wait til Spring. In the mean time you can research the forum for proper deck care and products. Relax, enjoy the winter. The deck will still be there come spring. jasper