In an inconspicuous area, test a small amount of your stain treatment to make sure that the solution won’t damage the fibre or the dye of your carpet. Once you’ve applied several drops to the test area, hold a white cloth on the wet area for several seconds. Look on the cloth for colour transfer, and on the carpet for colour change or damage. If a change occurs, another cleaning solution should be selected. If no damage is detected, apply a small amount of the selected cleaning solution with a dry white cloth and allow it to sit for about 10 minutes then work in gently.