My lettuce box was infested with a bunch of aphids. I sprayed them with a mix of mildly soapy water, which killed most of them. Some survived, but the lettuce is for my rabbits, so it’s all going to get eaten soon anyway.

For my bunny greens, I use the mild soapy water method because I don’t want to make my kids sick with other stuff. For other plants that are not for my buns, I use a sprayer with neem oil, which also works on the powdery mildew that gets kind of crazy in my garden.