How to determine quality of predator mite sachets.

Have you purchased predator mite sachets but are wondering how well they're working?

This video from Greenhouse Canada shows you how to do a quality assurance test.

If you've decided to use predator mites to control spider mites, thrips, or hemp russet mite, consider hanging the sachets in the heart of your canopy where the humidity is highest. This helps create favorable conditions for more predator mites to emerge from the sachet. 

andrew black