Any hand pump sprayer can be used to apply Boracare. It is recommended to dilute the Boracare in a bucket with hot water and then add the dilution to the sprayer. If you dilute Boracare directly in the sprayer you will almost always wind up with a clogged sprayer.
Wood treated with Bora-Care will appear darker than normal for a few days until the chemical dries. Typically it only takes 24 - 48 hours for the product to dry and not be sticky. If it is not drying within this time frame, it usually means that too much of the product was applied to the wood. You could lightly sand the wood to remove the stickiness and then apply your finishing oil.
Boracare is an excellent option for use on raw wood for termites and other wood boring insects. The mixing ratio for prevention is 5:1, meaning you will use 5 gallons of hot water with 1 gallon of Boracare. This can either be sprayed on or painted on. If you are using a sprayer, be sure to use another container to mix the product first and then put it inside of your sprayer. It is recommended that you use a sealant or paint on the wood after the product has dried completely. It will last for the life of the wood and seal the product inside so that irrigation from outdoors will not wash the product out of the wood.
Yes, Bora-Care can be injected into the studs themselves. It can be sprayed, painted, rolled or injected.
As long as the top is sealed then you can safely apply Boracare to the underside if unsealed and it will penetrate through the wood. It would be recommended to allow the butcher block to dry for 24-48 hours before using again. Any food contact surfaces treated with Boracare must have a sealant applied after the Boracare has dried.
For furniture your options are limited for treatment. If the wood is in its all natural raw state without any stains or finishes on it you can use a product like Boracare. Boracare will absorb all the way into the wood and eliminate any infestation that is there and last for the life of the wood. It does not stain the wood or leave behind any visible residue, but becomes one with the wood and any insect that ingests it dies. If the furniture has a finish on it, you would either have to drill holes throughout it and inject something like the Boracare or a foam, or the option most go with, hire a company to fumigate it
If you are seeing white residue after applying Boracare, then there are a few possible causes. What usually happens is that either the Boracare was not mixed properly before it was applied, or too much product was applied to wood. Another possibility is that the Boracare did not have enough time to dry completely before the poly coating was applied. Typically Boracare dries in 24-48 hours. You can remove excess Boracare using soap and water, but we would try to avoid doing this unless there is clearly too much product applied. Another condition that could cause strange drying is if you are trying to apply Boracare to wood that has already been treating with paint, stain, sealant, oil, or another finish.
BORACARE must be applied in a diluted fashion with water to work correctly and absorb into the wood. Boracare and the glycols it contains are designed to replace the natural moisture content of the wood so it bonds and last long term in the piece of timber you are trying to protect. Nisus, the manufacturer of Boracare, states that Boracare can be applied to kiln dried wood or prior to being placed in a kiln.
Bora-Care is the preferred choice to treat wood for any insect issues if most of the wood is exposed and it is raw wood you are treating, meaning it is not painted, stained, or sealed, it is just normal wood. If your wood is stained, then you would either have to sand off the finish to use Bora-Care, and then you can re-stain it after 24 hours of applying Bora-Care, or your other option is to drill holes every 6 inches apart into the center of the wood and inject Bora-Care to get it past the outside stain. Bora-Care is made only for wood, and you do not have to know exactly where the termites are for it to work which is a plus. Bora-Care is sprayed evenly over all exposed surfaces of the wood and actually penetrates through the entire piece of wood. When the termites in the wood try to consume the wood after it has been treated, they ingest the Bora-Care with the wood and die. No matter where they are in the wood the Bora-Care will find them as long as you treated the exposed wood that you can see. The other main benefit is that Bora-Care stays in the wood forever, so you will not have to worry about termites or beetles infesting the wood that you treated ever again. Also, Bora-Care dries clear so you can paint the wood, stain it, or leave it looking natural.