3 reasons people are rethinking DEET:

1. It’s been linked to neurological effects with heavy use. Reports going back decades have associated excessive DEEt exposure with symptoms like seizures, disorientation, and agitation. Most cases involved overuse, but the patter is worth knowing about, especially if you’re spraying it on kids every day all summer.

2. It absorbs into your skin and enters your bloodstream. DEET doesn’t just sit on the surface. Studies show it can be detected in the blood within hours of application and is processed through the liver before leaving the body. For most adults in normal use that’s probably fine. but for parents putting it on young children repeatedly, it’s a reasonable thing to factor in.

3. It’s showing up in waterways. DEET is consistently detected in rivers and streams, largely from people swimming or showering after application. it doesn’t break down quickly in water, which raises some legitimate environmental concerns beyond just personal health.

So what actually works?

This is where things get interesting. Herbal repellents aren’t just old wives’ tales. The science behind them is genuinely solid.

Catnip. Iowa state University researchers found that nepetalactone, the active compound in catnip, can be up to ten times more effective than DEET at repelling mosquitoes in lab tests. Research published in current biology later confirmed it works by activating an irritant receptor in insects that simply doesn’t exist in humans.

Citronella, one of the most well studied plants based repellents out there. a systematic review of 62 trials found citronella provided complete protection for up to 9-11 hours against certain mosquito species. it’s been used for generations and the research backs it up.