Sweating produces moisture which attracts flies/gnats. So how to stop sweating when temps. are so high??? You could try therapeutic NEEM OIL, adding it to some fly spray. It is supposed to last longer than simple fly spray and especially repugnant to gnats. Also fans may help.
--
- Frances C.
December 2017, Washington & California
Case history: https://ecir.groups.io/g/CaseHistory/files/Frances%20and%20Phoenix
Phoenix's Photo Album: https://ecir.groups.io/g/CaseHistory/album?id=12382