Best Overall
Sawyer SP618 Permethrin Aerosol
Key details
- Fabric
- Won't stain or damage fabrics
- Format
- 18-ounce aerosol
- Treats
- About 4 outfits per can
- Protection
- Up to 6 weeks or 6 washings
An aerosol is the least fussy way to get permethrin onto fabric, and this is the can we reach for first. The mist is fine enough that a shirt front wets out evenly in a few passes instead of soaking one shoulder and missing the other, and it reaches the seams and cuffs where a tick actually crawls. We treated a cotton tee and a pair of hiking pants on a porch rail and left them overnight; both came out soft, unmarked, and free of smell by morning. The scent while the fabric is still wet is the only part we noticed, so treat in the evening rather than ten minutes before you leave.
The label makes the promise that matters: it bonds for up to six weeks or six washings, whichever comes first. Sweat and rain don't undo it; UV and washing-machine agitation do. That means the clock runs on how often you launder a garment and how much sun it sees, which for most people works out to one treatment per hiking shirt per season and one per hunting jacket per fall. Refresh before a long trip rather than trusting something you sprayed in June.
Volume is where it gives ground. An 18-ounce can treats about four outfits, so a family's worth of pants, shirts and socks runs through cans quickly. For one person's gear that's fine, and it's the cheapest way to find out whether you like treated clothing at all. Outfitting a closet, a tent and everybody's boots is a different job — the twin pack or the gallon handle that with less waste and fewer spent cans.
Pros
- Even, fine mist that covers fabric quickly
- Bonds for up to 6 weeks or 6 washings
- Dries clear without staining or stiffening
- Least expensive way into a treated wardrobe
Cons
- One can treats only about four outfits
Our default pick: an even aerosol mist, up to six weeks or six washings of protection, and the least expensive start of anything here.