My husband and I are going to Tanzania (northern part) in September. I've read that the tsetse fly is attracted to the colors black and dark blue, so I am not bringing any clothing of those colors. However, if I bring a waist pouch and/or a daypack in dark blue and keep it in the vehicle, will the flies be swarming around those items...or is it only clothing on a human that is the attraction? Any other information on how bothersome these pests are is appreciated. Thanks.