A "Flea Collar" for Homosapiens?

I've been wearing veterinary grade flea a tick collars on the ankles of my hiking boots since the early 1980s with great success.

Not only will this work, it will work well!

I wonder if a hat band for my Stetson could keep them away from my head and neck?

It's a gimmick, and the simple reason is that midges travel in large clouds, and when they bite, they don't just bite where they land on your skin (sometimes they do). They land and then they crawl UP your arm or, VERY OFTEN, up your angle. And they crawl very, very long way, and then they bite you where the sun don't shine, if you know what I mean. So, unless the magic finger rings offers a 'dome' of protection with a radius of 2 m AT LEAST, it's only useful to protect your hand. One hand. Maybe an arm. But not your face, eyes, ears, nose, neck, check (crawling DOWN) - or your backside, when they crawl up the ankles (unless you wear gaiters around your trousers). Magical ring, my (...)! ;)

At last,thankyou. Where & when can I buy one please? Would be willing to trial one as I get bitten to death wherever I travel.