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: For best results, apply when pests are first noticed and ensure thorough coverage on both the tops and undersides of leaves.

: Concentrates are more cost-effective for larger gardens but require mixing with water in a sprayer (typically 2–4 teaspoons per gallon). Ready-to-use (RTU) bottles are convenient for small, targeted treatments.

Mastering Organic Pest Control: Using Bt for a Thriving Garden!

: Home Depot and Lowe’s carry major brands like Monterey and Bonide.

A widely available option known for controlling worms and caterpillars in home gardens Bonide Thuricide BT Concentrate (16oz) Go to product viewer dialog for this item. : Sold by Walmart for $32.99. Bonide Captain Jack’s Thuricide (128oz Ready-to-Use) Go to product viewer dialog for this item. : Available at Amazon. Ferti-lome Caterpillar Killer Bt Esbenshade's Garden Center& more Go to product viewer dialog for this item. Often found at agricultural and garden supply stores. Fertilome Caterpillar Killer with Bt (8oz Concentrate) : Listed at Walmart for $21.34. Where to Buy

Buying (Bacillus thuringiensis) is an effective and safe choice for controlling leaf-eating caterpillars and worms in organic gardens. It is a naturally occurring bacterium that is harmless to humans, pets, and beneficial insects like bees, but deadly to pests such as tomato hornworms and cabbage loopers when they ingest it. Popular Bt Products and Brands