While you may think it is safe to affix masking tape to carpet to accomplish a task, you might be surprised when you attempt to pull up the masking tape and a layer of adhesive remains behind on the carpet. Removing masking tape adhesive can be a challenge because you must dissolve the adhesive without harming the carpet fibers. Get masking tape off the carpet with careful effort to make sure your carpet remains in good condition.
Pour a small amount of isopropyl alcohol onto a towel and apply the alcohol to the carpet in an inconspicuous area to test colorfastness. Wait approximately 15 minutes after applying the alcohol to the carpet; if no undesirable color change occurs, assume the isopropyl alcohol will not damage the carpet.
Add isopropyl alcohol to the towel and use the towel to blot at the area where the masking tape residue remains. Continue applying the alcohol to the area, working the alcohol into the fibers to loosen the residue. Do not apply so much alcohol that it saturates the carpet backing, however.
Blot at the tape residue with a dry towel to remove as much residue as possible.
Continue applying the wet towel and blotting with the dry towel until you remove all of the masking tape residue.
Spray the area lightly with the spray bottle filled with clean water to rinse the isopropyl alcohol from the carpet when you finish removing the stains.
Dry the area completely with a towel to finish.