Q&A for How to Kill Bugs in Herb Gardens

Some well-known options are soapy water, beer, garlic, and Pyrethrum spray.

First, ensure that they are actually potato bugs. Then you can get a spray bottle of water with a little dish soap mixed in and spray it on the plants. Or you can add some natural predators of the bugs into your garden.

You can easily buy a beetle killer pesticide at a garden store. Another option is to use Sevin dust, although this may kill not just the Japanese beetles, but also beneficial insects as well.

One of the best-known pests of the mint plant is the Looper bug. They can be the Alfalfa or the Cabbage Looper.

Try making a mix of Dr. Bronner's soap (I use mint) in water, as described above. It should dehydrate the aphids. Continue to hose down the plants every morning and spray daily with the mixture until the pests are gone.