We recommend waiting at least 3 days before sealing/painting (but no longer than 6 weeks) after applying Boracare.
Boracare will only penetrate up to 8 inches with 2 applications done at the ratios listed on the product label, depending on if you are treating for an active infesation or prevention as well as the type of wood it is being applied. Applying multiple times would not make it penetrate any deeper. You should do your best to only mix enough solution for the job you are doing that day to prevent having to discard any solution. Any unused solution can be dumped out right up against the foundation of the structure taking care not to get it on plants.
Boracare can be used on ANY raw wood that is not painted, stained, or sealed. Even hardwoods. Since it dries on clear, it is no problem to stain, paint, or seal when you are done or apply a clear coat finish.
Unfortunately, we currently only ship within the United States.
It is not necessary to sand wood that is raw when treating with Bora-Care. If the wood is painted, stained or sealed then you would want to sand first and then treat.
Bora-Care would be great for applying to raw, cleaned wood for treatment against wood destroying organisms. We do carry a wood cleaner that you can apply first to remove any staining or discoloration called Mold-Clean.
Boracare contains borate, a form of Boron, that is different than boric acid products. Borate products are water soluble and are used in wood treatments as it can penetrate into the wood and/or used as a dust if using Timbor. Boric acid (dust) is not water soluble and is only for crack and crevice treatments. Both forms are not repellent but when dealing with subterranean termites Boracare is not the best product to use as it will only kills the termites that physically ingest the wood. This can cause the termites to start dying off quickly which sends a signal to the queen below ground that the area is bad and this can cause them to move to another location that is possibly untreated or inaccessible. It is a great product for Drywood Termites which are all in the wood they are infesting. When dealing with subterranean it is best to use a product like Termidor SC or Dominion which will be a slow kill and have a transfer effect so that it can kill the entire colony below ground.
When applying Bora-Care to structural wood in the home, you only need to apply the product once. It will last for the life of the wood. If you are applying to exterior wood like a deck, porch, or fence which is exposed to rainfall, then you would either need to use a water sealant after the Boracare is dry, or you would re-apply Boracare after about 3-5 years.