RepelXFT is a reformulated version of RepelX. It contains multiple natural additives which help reduce fly and ticks on a deer's back. It also contains a high level of vitamins and minerals to add nutrition. It is designed to be added to your existing deer mineral supplement or supplemental deer feed. Initially it should be mixed with salt and placed next to your mineral lick to get deer use to the flavors as deer are creatures of habit and at times can be leary unless your slowly exposing them to it. After 2-4 weeks, start mixing it with your deer mineral. Typically mix 2 lbs with 25 lbs. of deer mineral or 2 oz per 50 lb bag of deer feed. Call or email John with further questions.