







🌱 Defend your garden organically—because your plants deserve the best!
MontereyB.t. is a 1-gallon concentrated biological insecticide designed to target caterpillars and worm pests across a wide range of plants. OMRI-listed for organic gardening, it protects your garden without harming beneficial insects like bees or earthworms. Easy to mix and apply with sprayers, it offers an eco-friendly, effective solution for professional and home gardeners alike.








J**H
Legit works, FAST.
Literally saved my tomatoes this season.Had a major infestation of horn worms, and this killed them within a day.Will have this on hand for every season going forward.
M**E
The only spray that saved my flowers!
The caterpillars love my petunias and I was sick of watching my beautiful flowers get obliterated. I tried a few other sprays and they didn’t help at all, but this one delivered on its promise. I am so happy I finally found something that saves my flowers!!!
M**.
IT WORKS!
Bottom-line, this stuff works. Our squash is surviving because of this formula. Highly recommend!
R**H
Works good
Works good, is safe for bees, only wish it lasted longer than a few days.
T**
Works
Great for cabbage worms. Had heavy infestation of cabbage worms on cabbage and broccoli. I tried neem and diatomaceous earth, also manually picked off and this was the only thing that worked.
L**T
Monterey Spinosa
A bit pricey, Good product.
H**D
good service- good product but----
service great but the cap was.loose and leaking
J**2
Pay attention when ordering your size
Check your size. I received the smallest jug with a measuring spoon attached. I'm not disappointed
Trustpilot
2 months ago
3 weeks ago