https://www.insectshield.com/products/insect-shield-your-clothes-easy-packs
If socks and gear didn’t wear out it wouldn’t be necessary but about once a year it is time to get everything treated to avoid ticks and discourage mosquitoes.
The easy pack system sends you an envelope that you fill and return for treatment.
I treat my new socks (they do wear out) pants, t-shirt or hoodie and fleece. My buffs were treated a while back.
Just realized I send in an envelope (shared with my wife) about once a year.
Their turnaround has always been faster than promised but I’m always careful to give myself “just in case” extra time.
A great product.