Dennis Hronek designed a compost tea extraction unit, which extracts the organisms from the compost very efficiently, and then grows the organisms while they are on the way to your field. The extractor units are amazing in their ability to remove the organisms from the compost without requiring a growth period. The lessons learned in these first few years of aerobic, highly consistent, 24-hour tea brews is that the machines have to be tested and proven to stay aerobic in order to produce tea containing aerobic organisms in high numbers and high diversity, with no toxic anaerobic materials produced.