Concrete floor cleaners remove oil stains, tire marks, efflorescence, grease, and general grime from garage slabs, basement floors, and driveways. The five picks below are chosen for degreasing power, compatibility with sealed and unsealed concrete, concentration value, and ease of use for routine cleaning and deep restoration.
| Product | Best For | Rating |
|---|---|---|
| Simple Green Concrete Degrease | Routine garage floor cleaning | 4.6/5 |
| Zep Heavy-Duty Citrus Degreaser | Stubborn grease and oil stains | 4.6/5 |
| Oil Eater Original Cleaner | Heavy automotive grease | 4.7/5 |
| ACT Microbial Concrete Cleaner | Enzymatic deep stain removal | 4.5/5 |
| Rust-Oleum Concrete Etch and Clean | Pre-coating surface prep | 4.4/5 |
Simple Green Concrete and Driveway Cleaner — Best for Routine Garage Floor Cleaning
Simple Green Concrete and Driveway Cleaner is a pH-neutral, water-based degreaser that balances cleaning power with surface safety. It is safe on sealed concrete, colored concrete, and decorative finishes where aggressive alkaline products could cause damage or discoloration. For routine maintenance cleaning, dilute it 1:10 and apply with a stiff brush or a pressure washer at medium pressure. For heavier oil buildup, use at full concentration with a 15-minute dwell time. It rinses clean without leaving a residue that affects adhesion if a sealer or topcoat is being applied afterward. Biodegradable formula with no harsh solvent fumes.
Search for Simple Green Concrete Driveway Cleaner on Amazon
Zep Heavy-Duty Citrus Degreaser — Best for Stubborn Grease and Oil Stains
Zep Heavy-Duty Citrus Degreaser is a concentrated alkaline product designed for the tougher end of residential and light commercial concrete cleaning. The citrus solvent complex cuts through motor oil, hydraulic fluid, cooking grease, and embedded shop floor contamination that lighter cleaners leave behind. Apply undiluted to the affected area, work in with a stiff deck brush, allow a 10- to 20-minute dwell time, then rinse thoroughly. Avoid use on polished or sealed concrete without testing a small area first. The concentrate dilutes up to 1:4 for general maintenance use, making it economical over time relative to ready-to-use alternatives.
Search for Zep Heavy-Duty Citrus Degreaser on Amazon
Oil Eater Original Cleaner and Degreaser — Best for Heavy Automotive Grease
Oil Eater is a water-based alkaline degreaser with a strong track record in automotive and industrial settings. It is particularly effective on the dense, polymerized grease that builds up on shop floors and in engine bays over years of use. The formula is non-flammable and non-corrosive, making it safer to use in enclosed garages than solvent-based degreasers. It is effective on concrete, asphalt, and many metal surfaces. Dilute for routine cleaning or apply at full strength for restoration projects. The product is available in gallon jugs that offer a lower cost per application compared to quart-sized retail packaging.
Search for Oil Eater Cleaner Degreaser on Amazon
ACT Microbial Concrete Cleaner — Best Enzymatic Deep Stain Remover
ACT Microbial uses a blend of beneficial bacteria and enzymes that consume oil and organic compounds within the concrete pores rather than just lifting surface contamination. This approach is more effective on stains that have penetrated deeply into unsealed concrete over months or years, where surface scrubbing alone reaches only the top layer. Results take longer than chemical degreasers, typically 24 to 48 hours, but the penetrating action removes staining that other products leave behind. Apply, allow the product to work, then rinse. Multiple applications improve results on severe staining. Particularly well-suited to driveways and outdoor slabs where deep oil staining is common.
Search for ACT Microbial Concrete Cleaner on Amazon
Rust-Oleum Concrete Etch and Clean — Best for Pre-Coating Surface Preparation
Rust-Oleum Concrete Etch and Clean is a muriatic acid-based cleaner designed to prep concrete surfaces before applying epoxy paint, sealer, or topcoat. It cleans and opens the concrete pores simultaneously, replacing two separate steps of degreasing and acid etching. Apply with a watering can or sprayer, scrub while fizzing, then rinse thoroughly. Neutralize with baking soda solution before allowing to dry. This product is not intended for routine floor cleaning since acid exposure repeated over time can weaken the surface. Use it once before coating and follow with an appropriate sealant or epoxy system.
Search for Rust-Oleum Concrete Etch and Clean on Amazon
How to Choose a Concrete Floor Cleaner
Identify the primary contaminant first. Fresh oil needs an alkaline degreaser. Old embedded oil benefits from enzymatic cleaners. General grime and light soiling respond to pH-neutral products safe for sealed surfaces. For pre-coating preparation, use an etch and clean product. Consider whether the concrete is sealed: aggressive alkaline or acid-based cleaners can strip or damage clear coats and sealers. Concentration matters for value since a product that dilutes 1:10 is much cheaper per application than a ready-to-use spray at the same list price. Always rinse thoroughly and allow the surface to dry completely before applying any coating.
For related guides, see best concrete epoxy sealer and best concrete floor epoxy. See our evaluation process at /methodology.
Frequently asked questions
What removes oil stains from a concrete garage floor?+
Alkaline degreasers and enzymatic cleaners are the most effective products for oil stains on concrete. For fresh stains, absorb as much oil as possible with cat litter or sawdust first, then apply a heavy-duty alkaline degreaser. For set-in stains, a commercial concrete degreaser with a dwell time of 15 to 30 minutes followed by scrubbing and pressure rinsing produces the best results. Enzymatic cleaners work on older organic stains by breaking down the hydrocarbon chains.
Can I use a pressure washer with concrete floor cleaner?+
Yes, pressure washing with a concrete cleaner produces significantly better results than scrubbing alone, particularly on large areas or heavy buildup. Apply the cleaner, allow the recommended dwell time, then rinse with a 25-degree fan tip at 1500 to 2500 PSI. Avoid zero-degree tips that can etch the surface or damage sealers. For sealed floors, check that the cleaner is rated safe for sealed surfaces before applying.