How do I get rid of the stickyness on the sole of safety shoes

How do I get rid of the stickyness on the sole of safety shoes

I've had safety shoes in a box for years, when i looked at them the soles were stuck to the side of the box and had black goo lines on the box. Now the soles are all sticky. I've never used the shoes and thought someone could and wanted to donate them but i don't know how to get them un-sticky, i hate to throw them out!