I got a 2 lb. bag of Sunleaves guano a few weeks ago (off ebay) after receiving a tip from a friend of a friend that B. giganteus churn out babies on it. I received it in fine powder form, unexpectedly and have been disappointed in the results so far. I've not experimented with it much as a topping on other foods, but by itself it didn't interest them. I even tried wetting it down some and they seemed to like the liquids, but avoid actually consuming the product. I'll do some more experimenting and let you know.