I have used the no stinkin bugs junk. And it is just that........ junk.
It doesn't do anything better than any other bug spray and if you sweat alot you may as well forget about even applying it cause it won't make it five minutes. I once used an entire bottle on one days hunt and got ate up by skeeters the entire time I was hunting.
The thermacell is the best bug repellant made.
If you got chiggers bad you might want to try Rino Skins. I have not used them personally but I have heard good things about them.
http://www.rynoskin.com/
Another trick to keep chiggers out is to tape up the cuff of your pants to your boot. There is also a product made by Buckwing that does the same thing.
http://www.basspro.com/servlet/catalog.TextId?hvarTextId=39649&hvarDept=400&a mp;hvarEvent=&hvarClassCode=15&hvarSubCode =6&hvarTarget=browse