Is diatomaceous earth actually good as a preventative, or just a mess?

Hey everyone,
I’ve been seeing diatomaceous earth recommended everywhere lately as a “preventative” for insects, especially for ants, roaches, and other crawling pests. I’ve tried sprinkling it along baseboards and entry points, but honestly, I’m not sure if it’s actually doing much or just creating more dust to clean up.

For those who’ve used it long-term, does DE really work as a preventative, or is it more of a temporary solution that looks better on paper than in real life? Curious to hear real experiences — good or bad.

It works, but only if it stays dry and undisturbed. Once it gets wet or blown around, it’s basically useless.

I stopped using it indoors because of the mess. Vacuuming white powder constantly got old fast.

DE is more of a barrier than a killer. If bugs don’t walk through it, nothing happens.

@DustyCorners I had decent results in my garage, but inside the house it was hard to keep in place.

It won’t stop an active infestation. Think of it as a backup, not a main strategy.

I use it behind appliances where no one sees it. That’s where it shines.

Honestly felt like placebo to me. Switched to baits and saw better results.

@BugLogic Totally agree, humidity kills its effectiveness. Learned that the hard way.

As a preventative, sealing cracks and removing food sources did way more than DE ever did.

It’s not useless, but it’s overrated. Works best when combined with other control methods.