You’re asking the wrong question…where are you going to hunt when? If April-August pretty much anyplace but Zambia and Tanzania my experience has been the need for insect protection is overstated big time. The only insects on all my safaris have been Mopani Bees that don’t sting but are a nuisance. If it was me don’t do anything to her clothes and take Skin So Soft insect creams if needed. If you are going to Tanzania or Zambia she is in trouble anyway given Tsetse flies are a way of life and permitrin is a help but not a cure. Several people get a rash from the previous soaked clothes. The only way to find out is to take a shirt, soak in the insecticide let your wife wear on a 3 mile walk in the sun…if no reaction she is good to go if a reaction now you know. Africa is no place to find this out for the first time when you can find out here. I think it’s awesome that she hunts with you!!!!