We recommend mixing 1 tablespoon of concentrate per gallon of water.

SaferBrand 5163 Caterpillar Killer II Concentrate, 16 Oz For Insects

Q: How well does this work on fungus gnats? I have to water every day and the yellow sticky flags can't keep up. Thank you

There are different subspecies of Bacillus thuringiensis, and they each kill different things. Bt is very specific. This product contains Btk, which is Bacillus thuringiensis var. kurstaki. It kills caterpillars, i.e., the larvae of butterflies and moths. It won't kill fungus gnats. You want Bti, Bacillus thuringiensis var israelensis. Bti kills the maggots of a certain subfamily of flies that includes mosquitoes, black flies, and fungus gnats. Some products that contain Bti are Gnatrol, which is a powder, and Mosquito Dunks/Mosquito Bits, which come carried on chunks of stuff made of corn. The specificity of Bt is what makes it excellent for people who have concerns about the environment and don't want to kill bees, worms, and other beneficial creatures, but it also limits its use. You can't spray it and expect it to kill all the bugs it makes contact with the way that many synthetic chemical pesticides do. You need to know what you want to kill and get the right formula for it.

Q: Will this product harm our medicinal herbs? I don't want to spray if all of my flowers will die..we'd rather be stuck plucking the little %$&#ers....

The description here on Amazon says it’s safe.. But the directions on the bottle say it’s poison. It says harmful to people and animals, and to wash hands thoroughly after any contact. Now I’m wondering is I can spray my tomatoes.

Q: How long will a bottle last and retain it's effect last if stored correctly?

This bottle of BT is a concentrate, so you'll need to mix the appropriate amount from the bottle in another sprayer-type applicator (the amount of BT to use depends on the capacity of your sprayer). During the active growing period, the label recommends application once per week or after rain for best caterpillar control. I personally have used this product before, and it lasted a long time when capped and stored out of extreme heat/cold. The amount you'll use will depend also on the size of your garden. This stuff will keep the common cabbage loopers and tomato hornworms OUT of your produce, along with other common lepidoptera larvae.

4.5/5

Product ID: 4355848

Secure Transaction

Details

Item Weight
1 Pounds
Liquid Volume
16 Fluid
Brand
Safer
Target Species
Insects
UPC
024654516304

🌱Organic compliant

🐛Kills caterpillars

💧16 oz liquid volume

Frequently Bought Together

Safer Brand 5163 Caterpillar Killer II Concentrate, 16 Oz For Insects

Chapin 20000 Made in USA 1 -Gallon Lawn and Garden Pump Pressured Sprayer, for Spraying Plants, Garden Watering, Weeds and Pests, Polypropylene, Translucent White

Safer 5118-6 Insect Killing Soap Concentrate - Insecticidal Soap for Plants - Kills Aphids, Whiteflies, Thrips, Spider Mites, and More - OMRI Listed for Organic Use

Description

🌿 Unleash Nature's Defense Against Pests!

HARVEST READY - Use right up to the day of harvest for maximum freshness.
TARGETED ACTION - Specifically designed to tackle caterpillars and more.
ORGANIC ASSURANCE - OMRI Listed for peace of mind in your organic garden.
ECO FRIENDLY POWER - Eliminate pests without harming beneficial insects!
EFFICIENT CONCENTRATE - 98.35% Bacillus thuringiensis for effective pest control.

Safer Brand 5163 Caterpillar Killer II Concentrate is a powerful, eco-friendly solution designed to eliminate caterpillars, gypsy moth larvae, and other harmful insects without compromising your garden's health. With a 16 oz liquid volume and OMRI certification, this concentrate is perfect for organic gardening enthusiasts who want to protect their crops right up to harvest day.

Specifications

Item Weight	1.02 Pounds
Liquid Volume	16 Fluid Ounces
Target Species	Insects

Have a Question? See What Others Asked

How well does this work on fungus gnats? I have to water every day and the yellow sticky flags can't keep up. Thank you

Will this product harm our medicinal herbs? I don't want to spray if all of my flowers will die..we'd rather be stuck plucking the little %$&#ers....

How long will a bottle last and retain it's effect last if stored correctly?

How much per gallon?

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving over 300 million shoppers across more than 200 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

A$39

Duties & taxes incl.

Australiastore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

About Us

Customer Services

Customer Support

Regional Access

Legal & Policies

Social

Get the App