D.H.
Natural Repellents
These natural products will effectively repel mosquitoes, but they require more frequent reapplication (at least every 2 hours) and higher concentrations than DEET. Because of the differences between types of mosquitoes, products that contain multiple repellents tend to be more effective than those containing a single ingredient. As you can see, natural repellents tend to be volatile plant oils.
Citronella Oil
Lemon Eucalyptus Oil
Cinnamon Oil
Castor Oil
Rosemary Oil
Lemongrass Oil
Cedar Oil
Peppermint Oil
Clove Oil
Geranium Oil
Possibly Oils from Verbena, Pennyroyal, Lavender, Pine, Cajeput, Basil, Thyme, Allspice, Soybean, and Garlic
Another plant-derived substance, pyrethrum, is an insecticide. Pyrethrum comes from the flowers of the daisy Chrysanthemum cinerariifolium.
I actually planted a bunch of rosemary around my property and then found out that they repelled mosquitos! ( or the smell does )I use it on the BBQ when we eat outside..... Maybe you can find a lotion that has some these oils it?
I also read that you should avoid citrus or flowery smells on your body, and moisture is a big attractant for them also. Some products that are for babies have a strong , unpleasant odor, even if it is natural... My kids get headaches from the DEET stuff, so we never use it.
Good luck !! hope you find something soon.