Came across Pascol Exterior Decking Oil Natural 4L down to $35 for the normal price of $45, once the 20% off paints is applied it makes 4L $28
In store only so cash back via cash rewards don't apply but you could bundle with 5% off Masters gift cards through Cash Rewards to save even more
https://www.youtube.com/watch?v=7Bg586-wl38 - you shouldn't leave your deck unprotected. Kinda NSFW I guess? Very heavy on the double entendres.