Since I got some of my more unusual Arum species out of their pots and into raised beds, they have grown very vigorously and most of them are going to be lifted now and moved into the garden. One sign of their health has been the production of large quantities of seed. I'd like to send some to exchanges. What is the best way to clean a quantity of this seed? I know one shouldn't handle it without gloves. Thanks, Jane McGary Portland, Oregon, USA