I use it to protect untreated lumber from carpenter bees and ants. Plus, sprinkle it around the crawl space, foundation and walkways to keep them insects away.
I also use it in swimming pool as a stabilizer. Borax.
It is lethal to most insects as it disrupts their use of water, but vertebrates are not affected, in trace amounts.
How exactly do you use it on untreated lumber? What mix and how applied?
When it comes to killing pests, your best bet is boric acid. Borax should not be used as a pesticide, though some people confuse the two or think they are the same. Borax can kill pests, though it is not nearly as effective as boric acid.
What Boric Acid Won’t Kill
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