I saw this You Tube video on waterproofing a tarp, boots, clothing. etc. and so I gave it a try with a pair of boots. I bought a 10 oz tube of 100% silicone and a can of Naptha,,,,can also use Mineral Spirits. Mixed the entire tube and half a quart of the Naptha in a plastic jar with a lid on it. Shake it well to get it mixed then took a paint brush and applied to the outside of my boots, being careful to coat real good. After a day of drying, the boots do not leak at all. Wore them in high wet grass on a dove hunt this pass Saturday and at end of day.....no wet socks and perfectly dry. Just thought would share this for you guys. Think you can buy silicone in a can but cheaper to mix your own and do several items.