How to remove oil spots from carpet
Q. A hand truck had oil on the wheels and left about 80' of 4" spots on and off on the carpet. I had some stain remover and attempted to remove the oil by applying the chemical, then scrubbing with a hand held nylon brush, then using a carpet machine to clean up the area. The oils seem to be gone, but there are now dark spots on the carpet where the spots were removed. It looks like the mistake I made was to scrub the area with a brush. Is it ever going to go back to normal? Is there anything I can do to fix it?
A. From what you described, there is a trace of oil or tar still remaining. During the summer, parking lot sealer and especially patching materials contain tar tend to soften. A normal spotting chemical may not be sufficient. The process may require a carpet spotting solvent such as a gel d’Limonene to dissolve the tar.
If you had 80 spots, you could spray on the solvent and then bonnet with a damp bonnet. Next, extract and then spray each spot lightly with an extraction acidic rinse diluted 1:5 with water and then bonnet with a dry pad. Make sure the bonnet pad does not extend onto any dry areas and is approved for use on the particular carpet you are cleaning. Or, you can perform all the above steps with a soft brush and towel.
An acidic rinse is normally required for tar and heavy grease, to remove the staining properties. Before you try the above process, you could spray the darkest spot with the acidic rinse and lightly blot. After drying, if the spot is gone, you found the shortcut.
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