I hadn't done any "real" baking in years but, as I'm now retired and have the time, I decided to bake up lots and lots of batches of Christmas cookies just prior to the holidays. Since the cooking shows almost always state that it's a good idea to sift flour when baking, I purchased a simple metal flour sifter. There are two screens with some type of blades in between and you squeeze the handle and the flour sifts through. It worked perfectly fine. You all probably all are familiar with the thing I am describing. Now, my question is, although I carefully washed and allowed it to dry before putting it back in a cabinet, when I went to use it again yesterday (ran out of cookies, but still had the makin's on hand) multiple brown particles also sifted out along with the new flour I was using. Ugh. I don't know how to clean in between the two screens. I tried soaking it, using a toothbrush, and lots of rinsing, but there is still debris inside this thing. So, how do you all clean yours? Thanks for any help you may be able to offer.