Each sachet with hook contains 250 predatory mites and storage mites (all stages) mixed with carrier material /bran. Ulti-Mite is available in 100 or 500 sachets per box. The sachet is made of a 100% industrial compostable foil. It satisfies the conditions of the Industrial compostable’ standard (certified by external party). The sachets can therefore be disposed of together with the crop waste.