Timbor will only penetrate 1/4 of an inch into the wood and will leave a visible white residue on the surface. You may simply dust it off before applying the stain. If you are wanting a product that does not leave a white residue and absorbs completely through the wood, we recommend BoraCare. BoraCare will penetrate all the way into the wood and will not leave a visible residue on the surface.
No, Timbor is only used directly on wood.
It is recommended that you use something like Termidor SC or Taurus SC to inject into the ground. This product will last for up to 10 years in the soil once applied. Please check out our Termite Guide for tips on how to treat and prevent termites in the future.
Timbor does not treat or prevent for mold control. Spraying bleach on top of your application will likely pull or break down some of the particles which likely needs to be done so that you can put a true mold control product like Boracare with Mold Care on your wood to treat it. Also keep in mind, even with the use of proper mold control products to treat wood, if you have mold coming back that is because you have not fixed your moisture problem that is causing it to occur in the first place. You likely want to look at getting a dehumidifier for under your home and in your crawl space or put down a vapor barrier in those areas to cut down on excess moisture accumulating.
Per the product label, you can inject or dust Timbor at a rate of 0.5 oz per square foot when treating wall voids for insects such as carpenter ants. If you are mixing Timbor in water and creating a foam with a foaming solution and foamer, then you would use 1.5 oz of Timbor per gallon of water and use a high expansion foam. Keep in mind that drilling into and injecting a product like Timbor into all your wall voids is a tedious and labor-intensive application that is often best left to professionals. We have a great Carpenter Ant Treatment Guide here that may better assist you.
If the new wood for your porch was pressure treated/pre treated wood, then you would not need to apply either product. Powder Post Beetles will emerge whenever it is time for them to progress from the egg stage in the wood, to larvae and then a beetle. The eggs can lay dormant in the wood for up to 30 years and there isn't a way to know how many there are or where they are in the wood. Even if you treated the porch with Boracare (the more appropriate product for your needs), you would still see some of the beetles emerge whenever that life cycle happens. The Boracare helps make sure that any that emerge die as they ingest the treated wood, and no new beetles are able to infest the wood going forward. Boracare would be the more appropriate product than Timbor, since Timbor can only penetrate 1/4 inch into the wood and will leave a white powdery substance on the surface of the wood, and Boracare will penetrate all the way through the wood and dry clear.
How much Timbor is used will depend on your application and the area of the spaces you are treating. Per the product label, you can inject or dust Timbor at a rate of 0.5 oz per square foot when treating wall voids for insects such as carpenter ants. If you are mixing Timbor in water and creating a foam with a foaming solution and foamer, then you would use 1.5 oz of Timbor per gallon of water and use a high expansion foam. Keep in mind that drilling into and injecting a product like Timbor into all your wall voids is a tedious and labor-intensive application that is often best left to professionals. We have a great Carpenter Ant Treatment Guide here that may better assist you.
The Boracare would be the more appropriate product of the two for both active infestations and prevention of beetles and other pests. Timbor will leave a white powdery film on the surface of the wood and will only penetrate a 1/4 inch into the surface. Boracare, if mixed thoroughly before applying and not over applied, will dry completely clear and penetrate all the way to the center of the wood. Once an application of either of the products is dry, it would be safe to handle the wood bare handed or use tools to work the lumber into furniture. If you wanted to check with Nisus the manufacturer regarding any safety inhalation precautions if you use the Timbor powder and cut it after treating, you can reach them directly at 800-264-0870.
