This month's Consumer Reports gives high ratings to repellant capabilities of a non-DEET additive, the name of which escapes me. (I looked at the bottle after I posted and the name of the additive is Picardin. It is much easier on nylon and other fabrics than DEET, and reportedly not toxic.)
In any case, it is used in Off Advanced Formula (blue squirt bottle).
I plan to field test it this weekend!
cb