A spot that seems to return can involve residue, soil attraction or contamination located deeper in the carpet system. Pet urine is one example where contamination can reach backing or cushion rather than remaining only on visible carpet fibers.
Spills that reached the backing can wick back up as the carpet dries.
Soap left by DIY products attracts soil and makes spots reappear.
Urine below the surface can resurface as a yellow spot.
Faster drying reduces wicking.
A returning spot can often be retreated and extracted again.
Recurring Carpet Spot? Call 410-979-2355.