To test carpet stain removers, we poured specific amounts of wine, coffee, spaghetti sauce, and French dressing on untreated nylon carpet panels. After 2 hours we blotted up what hadn't been absorbed. The next day we worked in the removers.
Spills happen. But when they land on carpet, things get tricky. There's certainly no lack of cleaning options, including buying a carpet-cleaning machine, renting one, or hiring a pro. But sometimes you just need to clean up a few spots by hand.