The best paint primer on the market is widely considered to be Rust-Oleum Zinsser B-I-N Shellac-Based Primer, particularly for difficult restoration tasks involving extreme stains, smoke damage, and stubborn pet odors. For standard drywall preparation and general-purpose use, Zinsser Bulls Eye 123 and Kilz Original remain top contenders, providing exceptional adhesion and reliable surface preparation across residential and commercial painting projects.
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