Super DFM Honeybee has helped my bees now for a year. I saw tighter bee clusters, more wax production in the spring, very low nosema in bees tested by a lab, and my bees are building up and bringing in lots of honey. I am very happy with this product that did no harm to my bees or the products of the hive. It is really great to be able to get a product as effective and as safe as yours. We will be giving it to our bees at least 2 times a year.