Caution - Boiled Linseed - commonly used because it dries faster, but is not a good pollution prevention alternative due to the potential toxicity of the solvents, metals and fungicides that are usually added to make it dry faster. As a result, Bluebirders should be advised to use RAW linseed oil on nest boxes and to avoid Boiled or Thermalized forms. Be very careful when using JUST ANY wood sealers because they can be highly toxic to birds. A box treated with toxic preservatives in the fall will be lethal box in the summer. Raw linseed oil has no additives, and is safe to use. It is a clear to yellowish oil derived from the dried ripe seeds of the flax plant. Just remember not to apply it on real thick, give each coat time to cure then rub it into the wood again during the fall season.
Caution; Linseed Oil on rags, cloth, and paper saturated with drying oils may combust spontaneously due to heat given off during the curing process. This is especially the case where oil-soaked materials are folded, bunched, compressed, or piled together, which allows the heat to accumulate and even accelerate the reaction. Precautions include: wetting the rags with water and spreading them to dry in a safe place away from direct sunlight.
Sarver, Pa. 16055 Slippery Rock Pa. 16057
Remember to use RAW Linseed Oil on Nestboxes