Antifreeze, similar to other automotive fluids, leaves a visible stain when it dries on your automobile, garage floor and even your concrete driveway. The stain dries dark and if left, can penetrate and permanently stain the concrete. When removing the stain, use a cleaner that won't spread the antifreeze or damage the concrete underneath the stain. Once the stain is gone, you need to clean the concrete with a solution to remove any remaining antifreeze fragments.
- Skill level:
- Moderately Easy
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Things you need
- Cat litter
- Work gloves
- Trash bag
- Long-sleeve shirt
- Long trousers
- Rubber gloves
- Rubber boots
- Eye goggles
- Muriatic acid
- Scrub brush
- Warm water
- 2 old rags or towels
Sprinkle cat litter over the antifreeze stain --- cover the stain completely. Wear work gloves to keep the litter smell off your hands. Let the cat litter sit on the stain overnight.
Sweep the litter onto a dustpan and dispose of the litter in a trash bag.
Dress in a long-sleeve shirt, long trousers, rubber gloves and rubber boots. Put on a respirator and eye goggles to keep the muriatic acid from entering your lungs and eyes.
Cover any remaining antifreeze fragments with muriatic acid. Let the acid sit on the stain for five minutes. Scrub the stain thoroughly with a scrub brush to break up the fragments. Do not to let the acid run onto the grass or into any storm drains --- the acid will kill the grass and damage the environment.
Fill a bucket with a half gallon of warm water. Dip the scrub brush in the bucket of water and apply the water to the concrete. Scrub the concrete, re-dip the brush and continue to scrub the concrete until it is clean. Do not to let the water run onto the grass or into any storm drains --- the water contains acid fragments that will kill the grass and damage the environment.
Dry the concrete by patting it with old rags or towels. Dispose of the rags or towels in a trash bag. Dispose of the trash bags in your home's rubbish bin.
Tips and warnings
- If the antifreeze stain is large, work in sections and keep the acid and water from getting onto any plants, grass and out of any storm drains.
- Do not spray the stain with water from a hose. The water, antifreeze and acid will run and damage any grass, plants and the environment.
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