Paint that has spilled onto carpet can be a tricky spot to remove. Sometimes that spots can be thick droplets that have dried, or it can be smears ground into carpet from a customer's attempt to wipe it up.
Warning: Always test materials for colorfastness, follow label directions, and never mix products unless specified in the label directions.
For oil-based stains that refuse to budge, try Matrix Break Down POG. Break Down works quickly to remove grease, paint, tar, even lipstick, and can be rinsed out easily with water or Matrix Citrusolve Spotter.
A highly effective pre-spray for heavily soiled, greasy traffic lanes, Release also makes an excellent general-purpose spotter that may be mixed with solvents or water.
Chemspec Paint, Oil and Grease Remover (P.O.G.) removes stubborn oil-based problems, like paint, grease, oil, ink, shoe polish, carbon, and more from carpet, upholstery, and other fabrics.
Pro's Choice Pro-Solve Gel uses a powerful solvent blend to dissolve a wide variety of substances, including paint, nail polish, ink, tar, gum, grease, and many other hard-to-remove substances.