Monterey B.t. Gal
Best organic solution for gardeners protecting edible plants from caterpillar damage.
Monterey B.t. Gallon is a biological insecticide that effectively controls caterpillar pests. This easy-to-mix liquid concentrate stops caterpillars from feeding immediately upon ingestion, preventing further damage to your plants. It is safe for use on edible plants right up to harvest day and is approved for organic gardening. Unlike harsh chemicals, it poses no harm to beneficial insects like bees and earthworms when used as directed, promoting a healthier garden ecosystem.
$127.65
Owner Satisfaction
4.6
/ 5
Category Rank
357
/ 1717
#357 in Pesticides
Price vs Category Average
+187%
Above average
Formulation
Liquid concentrate
/ Liquid concentrate
Who it's for
- Eco-conscious gardeners protecting pollinators and beneficial insects
- Organic growers adhering to strict natural gardening standards
- Budget-minded gardeners managing large orchards or expansive plots
Who should skip it
- Gardeners needing immediate results to stop active infestations
- Busy growers unable to commit to frequent, weather-dependent reapplication
- Gardeners dealing with aphids, mites, or non-caterpillar infestations
Performance breakdown
Caterpillar Efficacy
Stops feeding damage almost instantly upon ingestion by target pests.
Organic Compatibility
OMRI listing ensures full compliance for certified organic gardening practices.
Beneficial Insect Safety
Protects essential pollinators like bees while targeting specific garden threats.
Harvest Flexibility
Zero-day pre-harvest interval allows for application right up to picking.
Application Ease
Liquid concentrate formula mixes quickly for efficient sprayer preparation.
Versatility
Highly effective across diverse vegetable gardens and ornamental plant varieties.
Key Specs
Formulation
Liquid concentrate
Container Size
Gallon
Pesticide Type
B.t. (Bacillus thuringiensis)
Application Method
Spray
Organic Listing
OMRI Listed
Pre-Harvest Interval (PHI)
Day of harvest
Target Pests
Caterpillar-type insects
Active Ingredient
Spinosad
Features
- Controls caterpillar pests upon ingestion
- Safe for use up to harvest day
- Protects beneficial insects and wildlife
- Easy-to-mix liquid concentrate
- Approved for organic gardening
- Stops feeding immediately
- Versatile for various plants
What customers say
This product offers reliable effectiveness for targeted pest control, specifically eliminating destructive caterpillars like cabbage worms and tomato hornworms. Gardeners appreciate this biological solution for its consistent performance without harming beneficial insects or the environment. Its dependability and simple integration into garden routines make it a highly recommended choice for both organic and conventional gardeners seeking effective pest management.
Know before you buy
This product is specifically formulated to target caterpillar-type insects. It works by ingestion, causing the pests to stop feeding immediately after they consume treated plant tissue.
Yes, it is approved for organic gardening and is safe to use on edible plants. Because it has a pre-harvest interval of zero days, you can apply it right up until the day you harvest your vegetables.
No, Monterey B.t. is designed to be selective. When used according to the label directions, it does not harm beneficial insects like bees, ladybugs, or earthworms, making it a safer choice for your garden ecosystem.
This is a liquid concentrate that must be diluted with water before use. You will need a garden sprayer to apply the mixture thoroughly to the foliage of your plants where caterpillars are active.
You can apply the product as needed based on the presence of pests. Monitor your plants regularly and reapply if you notice new caterpillar activity or after significant rainfall, which may wash the product off the leaves.
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