Adult Tachinid flies lay eggs on the squash bugs, and the larvae consume squash bugs as food. Adult flies feed only on nectar and pollen, so they won’t harm your vegetable plants. Ground beetles and damsel flies will also prey upon squash bug eggs if they can find them.

How do you keep squash bugs away?

Companion planting is also worth a try, using repellent plants that deter the squash bug. They include catnip, tansy, radishes, nasturtiums, marigolds, bee balm and mint.

What kills squash bugs organically?

Organic insecticidal soap works great for killing squash bugs and nymphs. You can also mix your own homemade spray using 1 tsp mild liquid soap to 1 liter of water (be sure to always spot-test sprays before using them on any plant). The these organic sprays will kill most of the squash bugs on contact.