Purchased this item this spring, I had several feeders around the yard but did not see any hummers. The Instant Nectar is easy to make, you just add water, fill your feeders and wait for the hummers. Since I did not see any hummers it's hard to review the product and make any type of review in regards to whether they liked the nectar or not.  I'll put the feeders back up in the fall and see what happens. On a side not the ants and bees loved the nectar.