Stamina Plus’s Equine Flex Plus controlling mosquito bites

Here in Cody, Wyoming we have had an unusual amount of rain this year leading to more mosquito bites on the horses than usual. I have had an observation the last week that the horses that are on daily supplement of Equine Flex Plus are not having the mosquito bites that the other horses are having. Stamina Plus Flex Plus fed in the grain daily may have a place in controlling mosquito bites on horses.