Working with cement can be messy. If you have cement that has dried on your tools it can be difficult to remove, but with a little patience and elbow grease you can clean them up again. There are four possible methods below. Begin by trying the individual steps one at a time, not necessarily in order. It is likely that a combination of multiple methods will ultimately yield the best results and you may have to experiment a bit.
Wear safety glasses, gloves and a mask.
Soak the tools in white vinegar. Vinegar will often dissolve a lot of the cement.
Use a pressure washer to blast off more of the cement.
Scrape off small spots with a small, flexible putty knife.
Use a cement removal product. Traditional products use an acid, while some newer products like RoMix's Back-Set work as a molecular cement dissolver by using a compound found in sugar cane syrup. These products can be found in hardware or home improvement stores.