There are sprays made for making hiking boots, and shoes water resistant. I"ve used spray for my hiking boots, and it works very well. Might be worth a try. Might try some 3M Scotchgard:
https://www.scotchgard.com/3M/en_US/...4529207&rt=rud
Last edited by freeranger; 09-11-20 at 08:53 AM.