There are two kinds of diatomaceous earth: pool-grade and food-grade. Always, always get food-grade. Pool-grade is for filters and will hurt your pets. Seriously, don’t even look at it.
Food-grade is safe to eat (not that you’d want to). It’s sold at garden stores, farm supply places, or online. Look for a bag that says “food grade” in big letters. Your future, non-itchy self will thank you.
What You’ll Need (Your Flea-Fighting Toolkit)
Grab a dust mask (you don’t want to inhale this stuff), a cheap garden spreader, or even an old sock. I’m serious—an old sock works great. Fill it with powder, tie the end, and use it like a giant spice shaker.
You’ll also need a dry day. No rain in the forecast, please. Diatomaceous earth only works when it’s dry. Wet powder is just sad, useless mud.
