Safer Caterpillar Killer II (16 Oz Bottle)

Safer Caterpillar Killer II is an OMRI-listed biological insecticide in a 16 oz bottle that targets caterpillars and worms using Bacillus thuringiensis var. kurstaki (B.t.). The naturally occurring bacterium is lethal to caterpillars when ingested but leaves beneficial insects and pollinators unharmed, making it a precise tool within an integrated pest management plan.

At a glance

• Type: Biological caterpillar and worm insecticide
• Active ingredient: Bacillus thuringiensis var. kurstaki (B.t.)
• Size: 16 oz bottle
• Targets: Tent caterpillars, gypsy moth larvae, cabbage loopers, and other worms
• Certification: OMRI listed for organic gardening
• Harvest safety: Can be used up to the day of harvest

Best for

• Protecting vegetables from cabbage loopers and hornworms
• Guarding fruit trees and shrubs from tent caterpillars
• Managing pests without harming bees and beneficial insects
• Organic gardens needing OMRI-listed inputs
• Integrated pest management programs

How to use

Thoroughly coat the foliage where caterpillars are feeding, covering tops and undersides of leaves so pests ingest the spray. Apply in late afternoon or on cloudy days, since B.t. breaks down in sunlight. Monitor plants and reapply as needed; it can be used right up to harvest.

About Grow Organic

Grow Organic supplies seeds, tools, and natural growing products for home gardeners and small farms, with a focus on organic and earth-friendly solutions.