Spring cleaning
Kate wonders if it is OK to wash tatami mats. "I'm spring-cleaning," she writes.
Begin by vacuuming to clear the floor of any dry material. Then, using a cloth, wipe the mats, following the run of the weave. If you go against the weave, a) it's uncomfortable, and b) grubbiness may get trapped in the seams.
You can choose to use a wet rag that's well-wrung-out (meaning only slightly damp with water) or use a commercial spray that helps to keep mites and mold at bay. Too much liquid and if your mats are old and the natural sheen has worn away, you might find them turning a bit soggy.