If your boots are old and leak..... replace them. Scent will leak out where the leaks are. Also, I don't wear rubber boots much because they tend to make my feet hot and that causes oder. My two main pair of boots are the Wolverines (pictured on the home page of HNI) and Rocky Blizzard Stalkers.

I have found that if I walk around in my buddy's dairy barn while wearing these boots, the deer pay no attention to my entry trail. Best cover scent around..... and free!

Once the boots start leaking, the deer notice even with the cover scent.