Phytoseiulus persimilis - FAQs

When should I release P. persimilis?
As soon as you spot spider mites or webbing. Bottled persimilis works best on active infestations. For prevention, hang slow-release sachets.

Why did spider mites come back after persimilis cleared them?
Persimilis eats only spider mites, so once they're gone it moves on or 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.

Can I use P. persimilis with neem oil or insecticidal soap?
Not while predators are present. These products can kill predatory mites through direct contact, and some treatments may remain harmful after the spray has dried. Check which chemicals are safe for predatory mites and observe the recommended re-entry/release interval before introducing predators.

Are P. persimilis predatory mites 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.