I use Diatomaceous Earth to keep the creepy crawlies away too. I use it because I am a Beekeeper and you don't use anything Toxic when you have bees for it will kill them. Even just a little bit will kill them They go everywhere and they get into everything. The last warm spell we had (the first part of Jan.) we had those little babies all over the porch, just walking around, just like they were taking in their daily exercises. So I only use Diatomaceous Earth for that reason.
We have a wood stove and where we stack our wood really gets infested with bugs, roaches, ants, mealy bugs, all the things we hate to have inside too. I just sprinkle some of the D.E. around on the wood and haven't seen any bugs around it lately. I know it can also kill the Bees, but they have to crawl thru it to get it on them, and for some reason, they don't seem to prone to crawling on the wood pile. Thank God for that. We have enough stuff killing our bees off without me getting into the action by using poisons of anykind that you spray or put on the soil.
I didn't know that Boraxo would help deter ants. I knew about Boric Acid but not Boraxo. I will have to give it a try too. I also keep in for my homemade soaps that I make.
...and may the Lord bless us, with all we need. AMEN