How to Treat Wood With Boric Acid


Boric acid is a must-have for home owners with any kind of wood finish in the home. Boric acid is a great repellent for ants, cockroaches, silverfish, and other obnoxious pets that feed on wood. Attics, basements, utility rooms, laundry rooms, and kitchens are important places to treat with boric acid in order to prevent infestation of house pests.

Things You'll Need

  • 2 to 4 tablespoons boric acid
  • 3 cups water

Wood Treatment

  • Boil the water in order to dissolve the boric acid.

  • Pour the boric acid-water mixture into a spray bottle.

  • Shake the spray bottle until the mixture is fully dissolved.

  • Spray wood generously, then let dry.

Tips & Warnings

  • Write the mixture's measurements on the outside of the spray bottle to remember the recipe, and for emergency purposes.
  • If ingested, this solution is poisonous to household pets and children. Keep this out of reach on a high shelf. If this solution is ingested, call poison control right away.

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