Timbor is more typically used on wood that will not be exposed to weathering and the outside. You would need to re-apply the Timbor each time you re-sealed the wood with the Behr product. The same company that makes Timbor makes a product called Bora-Care. It is more expensive, but it is a liquid solution instead of a powder. The Bora-Care will penetrate deeper in the wood, and protect the wood indefinitely so you would not have to re apply the product ever again. Also, Bora-Care dries clear and is easier to paint or stain over whereas the Timbor leaves a white powder on the surface and is more difficult to paint or stain.
No. Timbor is not labeled for roach control and would not be the best choice for this type of application. If you have a current infestation of roaches we recommend the products that come in our Roach Control Kit. The products in the Roach Control Kit are perfect for most roach control problems in most indoor settings. This professional kit includes Cyzmic CS Insecticide for spraying the outside perimeter of the home and inside underneath appliances, behind cabinets, under toilets and sinks, etc. Advion Roach Bait Gel--one of the best roach baits on the market. Advion can be applied up high in the kitchen in the corner of cabinets and in cracks and crevices in kitchens and bathrooms. The bait contains a slow-acting poison that attracts and kills feeding roaches, who also spread the bait to other roaches by contact or by sharing food. Finally, Gentrol Point Source stations provide an IGR (Insect Growth Regulator) that will stop roaches from laying eggs, helping to halt the infestation. The combination of an IGR with roach bait is a highly effective roach control strategy that is widely used by pest control professionals.