Just this week I came across information about studies showing the use of animal products in the garden showed an increased incidence of disease and pests over the season. I've never used animal stuff for a variety of reasons, with the exception of bloodmeal for nitrogen. The main reason is the wormers and GMO foods the animals are fed. And I still have a bit of disease and pests as my soil isn't fully balanced yet. I'm wondering if you've ever not used manure and what the garden was like?