A paint, insecticide or vacuum cleaner sprayer may be used. Care must be taken to assure complete coverage. When the solution dries, it produces a shiny transparent, colorless coating. Some proprietary chemicals that can be added to the water in a Christmas tree stand are now available. Guard Against Carpet Stains from the Christmas Tree Water spilled from your Christmas tree holder and pitch from the tree can cause permanent carpet stains.
Some preventive measures follow.
As you set up a tree, pick up fallen needles. Needles allowed to remain on the carpet may exude pitch that will cause stains. If pitch gets on the carpet, apply a commercial spot-removing solvent or turpentine. Do not use carbon tetrachloride, gasoline or lighter fluid. Use a small amount of the solvent on a cloth because an excessive amount can damage the backing of the rug, particularly if it is latex.