Bacterial residue should be treated at high temperature.

Bacterial residue is the waste of cultivated mushrooms, which is mainly composed of cottonseed hulls, which has the function of dredging and breathable, and has nutrients, so it is an ideal plant material for orchids. This summer, Lanyou sent a large bag of bacterial residue, which was exposed to the hot sun for a week and used in 30% mixed plant material in autumn. Soon, flying insects, shaped like flies, were found on the orchid leaves, chasing each other to mate and reproduce. A few days later, the orchid pressed against the black, crawling around, really messed up, can not think of a way to restrain. Suddenly remembered Lanyou's words: raise orchid earthworms with bacterial dregs. The culprit lies in the bacteria.

Scum. So he reopened the basin and replaced it with plant material without bacterial residue. A storm calmed down.

Although the bacterial residue was sterilized by sunlight, it could not kill the eggs, and only high temperature treatment was safe and reliable. (old iron)