We apologize but we do not know of anywhere in Canada that carries the products we do. Many of our Canadian customers will have a product shipped to someone in the United States that they happen to know like a friend or family member, and they they forward it onto Canada. We do offer FREE shipping within the US.
Yes you can use the dip method when using Timbor however, you will still be getting the same 15% solution rate as you would if you were spraying it on and getting the same 1/16" penetration level as well. To get the full penetration all the way through the wood we recommend using Boracare. Yes, you would want to get the surface powder left behind by the Timbor off the wood before using any finishing products.
Tim-bor Professional cannot be applied to wood that is already finished with a stain, sealant, or paint. If the wood is pressure treated, there is no need to treat it with the product, however if you still would like to ,Boracare would be the product to use and expect it to absorb and dry slower than on raw untreated wood.
Timbor can only be applied to raw wood. It would likely kill any vegetation it was applied to. If you are looking for something to apply to plants for fungus and insect control, you can use something like Bayer Advanced 3-in-1 Insect, Disease, and Mite Control.
Yes, it is recommended that you use a finish and/or sealant after using Timbor. It will potentially dry with a texture so you may have to sand it first.
Timbor will only penetrate 1/4 inch into the wood since it is a powder. It should only be mixed with water as directed on the product label. If you do mix it with other products, it will clump and not work the way you would like it to. If you need better penetration, Boracare is the only way to do so.
Timbor is not labeled to be used in this manner, and we can make no recommendations on this usage. Should you have any further questions feel free to contact the product manufacturer, Nisus, directly at 800-264-0870.