Cynthia from S California writes
Is this 'already diluted' Boracare?
Penashield and Boracare do have the same active ingredient and are similar but not the exact same product. Penashield is used as is and should be used every 1-5 years (on outside wood that is not painted) while Boracare lasts for the life of the wood in favorable conditions and is a concentrate. For indoor wood and wood that is painted/stained both will also last for the life of the wood. We would recommend using Boracare if you are seeking a longer lasting treatment.
Answer last updated on: 11/03/2014