![]() ![]() Some are large, some are small, some are hairy, and some look like worms. Caterpillars come in many different shapes and sizes. It is usually sold in powder form, which is then mixed with water and sprayed onto infested plants. BTk is available commercially, so you can probably get it at your local home improvement or gardening store.The first time will be about ten days after caterpillar eggs have hatched, and the second time about two weeks later, while the caterpillars are still small. You should follow the instructions that come with the BTk, but generally, it should be applied twice. It is important that you apply BTk to leaves of affected plants or trees at the right time because it must be eaten by the caterpillar.Furthermore, it is considered to be safe because it doesn’t harm pets or people, and the dead caterpillars will not harm other animals (such as birds) that might eat the caterpillar. This bacteria is good for controlling caterpillars because it interacts badly with the digestive system of caterpillars. ![]() BTk is a bacteria that naturally occurs on dead or decaying material in the soil. Try using Bacillus thuringiensis var kurstaki (BTk). ![]()
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