Concrete, Cement - Grease Stains
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In a garage, it is advisable to place a shallow metal pan under the car to catch dripping oil. Spreading the area under the car with sand or sawdust will help absorb dripping oil. Periodically saturated sand or sawdust should be scraped away and fresh, clean material put in place. This will prevent tracking oil to other areas of cement or into the house.
If oil or grease is spilled on porch or patio cement, apply an absorbent powder such as fuller's earth, cornmeal, or sawdust to absorb as much oil as possible immediately. Leave it on stain for a few hours and sweep up.
To remove the grease stain:
1. Using a stiff long handled brush, scrub stain with concentrated detergent suds. Rinse well with hose. Dry and repeat if necessary.
2. Sprinkle "dishwasher" detergent (dry) on wet concrete. Let it stand a few minutes; pour boiling water on area. Scrub and rinse. Use rubber gloves on hands.
3. Commercial Product: One brand is Garage and Driveway Cleaner by Red Devil Co. available in paint or/and hardware stores. It can also be used on blacktop surfaces. Other similar brands may be available in your area.
4. On wet oily surface of concrete, sprinkle with trisodium phosphate. Allow to stand 15 to 30 minutes, then scrub with stiff brush and hot water. Rinse with clean water. Do not use on asphalt.
OR: Dissolve a cup trisodium of phosphate in 1 gallon of hot water. Pour over stained cement surface generously and allow to soak 15 to 20 minutes. Scrub vigorously with stiff brush or broom. Rinse off with hose. Repeat if necessary. Do not use on asphalt.
5. Scrub the concrete with a grease solvent to remove as much as possible of the grease stain. Have good ventilation and avoid spark or flame as solvents are flammable. Benzine, often recommended, can ignite, just from a spark from friction or rubbing.
6. Mix 1 part sodium citrate to 6 parts water and 6 parts glycerine and add enough whiting or fuller's earth to make a thick paste. Spread paste on oil or grease stain. Let stand 1 week. Add new paste when it dries. Flush with water after brushing dry paste away. Repeat if necessary.
This article was written by Anne Field, Extension Specialist, Emeritus with references from Mary Ellen Delsipee and Isabel Jones, previous Extension Specialists.
MSU 2003
If oil or grease is spilled on porch or patio cement, apply an absorbent powder such as fuller's earth, cornmeal, or sawdust to absorb as much oil as possible immediately. Leave it on stain for a few hours and sweep up.
To remove the grease stain:
1. Using a stiff long handled brush, scrub stain with concentrated detergent suds. Rinse well with hose. Dry and repeat if necessary.
2. Sprinkle "dishwasher" detergent (dry) on wet concrete. Let it stand a few minutes; pour boiling water on area. Scrub and rinse. Use rubber gloves on hands.
3. Commercial Product: One brand is Garage and Driveway Cleaner by Red Devil Co. available in paint or/and hardware stores. It can also be used on blacktop surfaces. Other similar brands may be available in your area.
4. On wet oily surface of concrete, sprinkle with trisodium phosphate. Allow to stand 15 to 30 minutes, then scrub with stiff brush and hot water. Rinse with clean water. Do not use on asphalt.
OR: Dissolve a cup trisodium of phosphate in 1 gallon of hot water. Pour over stained cement surface generously and allow to soak 15 to 20 minutes. Scrub vigorously with stiff brush or broom. Rinse off with hose. Repeat if necessary. Do not use on asphalt.
5. Scrub the concrete with a grease solvent to remove as much as possible of the grease stain. Have good ventilation and avoid spark or flame as solvents are flammable. Benzine, often recommended, can ignite, just from a spark from friction or rubbing.
6. Mix 1 part sodium citrate to 6 parts water and 6 parts glycerine and add enough whiting or fuller's earth to make a thick paste. Spread paste on oil or grease stain. Let stand 1 week. Add new paste when it dries. Flush with water after brushing dry paste away. Repeat if necessary.
This article was written by Anne Field, Extension Specialist, Emeritus with references from Mary Ellen Delsipee and Isabel Jones, previous Extension Specialists.
MSU 2003
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