My horse is really susceptible to bot fly eggs, he has a rug on but still gets them on his flank and girth area, and tends to get a lot on his legs. Any tips for preventing them?

Putting baby powder on the areas they are prone to being on.
Make Sure you have a bot knife and put fly spray on your horse. I know these may sound obvious but I hope it helps
Bot fly knife
Join the fun and sign up to connect with our 200,000 members!