Just ran out of the powder for putting on my fletching so I went and picked up some cheap silicone like waterproofing that goes on tents.I sprayed a test arrow last nite and checked it this morning,I"M SOLD.It's way better than any powder I've used and you can agitate the feathers and they look brand new!Up hear close to the coast we get a lot of rain, I hope this stuff holds up!