Looking for a “silver bullet” primer that covers everything unwanted? Use the one contractors keep in their vans: Rust-Oleum® Zinsser® B-I-N® Primer. As the original, shellac-base primer-sealer, nothing is better at permanently blocking stains, odors and wood knots.
For interior and spot exterior use
Greatest stain sealer
Seals knots and sap streaks
Seals pet, smoke and musty odors
Sticks to all surfaces without sanding
Lightning fast dry - recoat in 45 minutes
Zinsser B-I-N / BIN Primer Sealer 0090 & Zinsser 13 oz. B-I-N / BIN Primer Sealer Spray 01008