Consumers Reports in the July 2016 issue at 40 discusses insect repellents and in the August 2016 issue at 25 discusses permethrin.  The top rated repellent was Sawyer Picaridin which scored 96, Ben's 30% Deet Tick & Insect Wilderness Formula scored 93.  It rates 16 brands in the three page article.

They tested different shirts which were treated with permethrin and had different results.  The report found that permethrin helped to reduce bites and did kill some mosquitoes.  ". . .Plus, none of the treated shirts we tested were as effective against bites as an ordinary shirt sprayed with deet.  And it's worth noting: The shirts don't eliminate the need for using repellent on your skin or untreated clothing.  In fact, the manufacturers stress the important of wearing the clothing along with a tropical repellent.  The August report is also 3 pages.

Just thought the group might find the articles interesting.