I take it you mean Bareback? Mine leak a bit if not kept well waxed. You can get a tin of dubbin wax from Amazon for cheap, clean boots & allow to dry & then generously dubbin, as @little_critter above says, pay attention to seams an any worn areas.
(Need to practice what I preach, mine are...
I use straw pellets under straw. I use about a 3rd of a bag in the spot where Dave wees & I can usually stretch a week out of it. I do put a good thick bed over the top.
Just watching Lucy Worsley on the telly & Bloodhounds were used for looking for escaped slaves.
Thankfully they have a more positive use now, but it enforces they are NOT HUNTING FOXES.