I thought I'd share this page with you. I made lids for my mugs. http://www.jrshaving.blogspot.com/search/label/Lids
Welcome to the Shave Den, I only cover jar creams, always leave my soaps and croaps in a shave mug uncovered
Welcome from Canada. As you'll note, opinions differ considerably. Im like JR Reyes in that I like to rinse, wipe and dry mine before putting the lids back on. My MdC (in a bowl with no lid) came with written documentation stating air drying the soap was beneficial.
I turn the bowl over to let any water run out, then put the lid on. I don't dry the soap or anything like that.