NH Oil Protective Coatings NH BACK-N-BLACK with Mouse Out Rust Prevention Spray 1 Gallon Black Oil-Based Rustproofing Protection From Road Salt. Superior Rust Protection. Black tint, Exclusive formulation, Stops corrosion, Displaces moisture, Long-lasting, Creeps, Minimal Drip, Eco-friendly. This superior lubricating film provides up to 12 months of protection to undercarriage, seams, crevices, and hidden areas. Safe for electronics, paint, hard rubber, and vinyl surfaces. KEEPS RODENTS AWAY FROM YOUR CAR MOUSE OUT