Phytoseiulus persimilis Sachets - FAQs

Should I buy sachets or bottles?
Sachets release predators slowly over 2-4 weeks and suit prevention and maintenance. Bottles put a large number of predators on your plants at once, so they suit spider mites that have already started. Many growers use both.

How do I know the sachet is working?
Look for fast, orange, long-legged mites on the leaf undersides with a magnifier, and for new growth without stippling or webbing.

My growing area is dry. Will persimilis work?
Its eggs need humidity above 60% to hatch. In consistently dry air, Neoseiulus californicus is a better fit.

Are persimilis sachets safe for people, pets and plants?
When used as directed, yes. Persimilis isn't known to bite people or pets, and it doesn't feed on plants. It eats only spider mites.