Even shoes that look to be in good shape, after you've worn them for a while, they shouldn't go to anyone else. They've molded to your own feet, and won't fit anyone else properly, and possibly cause problems for them. If your boots haven't seen the light of day in 10 years then they haven't been cared for....the leather is not going to be very good at this point anyway. Textiles are better to donate. From the hygienic point of view, I guess these old boots are unhygienic too. So yes, off in the garbage bag. I love shoes and boots, but in this case ...Way gross! These old boots were definitely garbage and NOT donation items. I think a lot of organizers here agree with me in this case