Phytoseiulus persimilis Bottled - FAQs

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

I can't see any mites in the bottle. Is that normal?
Yes. Persimilis are tiny and hide in the carrier. Tip a little onto white paper in a warm room and watch with a magnifier; they're orange and move fast.

Why did spider mites come back after persimilis cleared them?
Persimilis eats only spider mites, so once they're gone it dies off. Release again when mites return, or pair it with Amblyseius andersoni or Neoseiulus californicus for standing protection.

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

Is bottled persimilis 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, and its numbers fall once they're gone.