Does she spray it on the bees?
Ok the wintergreen in to keep away hive beetles that carry the mites that kill the bees. The others... She sent me this link:
http://www.bluecollarbees.com/2012/03/how-to-make-essential-oil-mixture-to.html?m=1
I like Young Living because they are the only company that grows, harvests and distills their own plants. From seed to seal they onow what is in those oils.

If you're interested pm me! They work good on chickens too!!