No drain either but wash regularly in the garage all year long. What I did was pick up the roll out floor covering.
The original Parking Pad® garage flooring mat — Rib-Channel Surface This works GREAT to channel everything out the door including salt, rain, etc.. I actually picked it up at Sam's club for $140/roll. Used three rolls total and was able to cover the main part of the floor wall to wall. It was about 6' short but doesn't matter as that is where my workbench and a few other things go. Simply roll it out, cut it to fit and that's all. It's not perfect but does the job quite nicely and looks much better than the bare concrete. Good cheap solution!!