My tatami mat fibers are dry. What do I use to give them more moisture?

I've been told that there is a Murphy's Oil. But, can't seem to find it.

In the US, you can find Murphy's Oil in just about any large supermarket. It's with the floor cleaning supplies. You may also be able to find it in hardware stores. It's a pretty common product.

Seems like that would be too heavy for a tatami, though. Check your mats care instructions or call a store that sells them to ask what too use....

Hope that helps...