I use neem oil
Hand picking is the best way. Anything you spray can harm your beneficial insects as well. If you're looking for a natural spray anyways, try neem oil or pyretherin.
40 parts water to one part liquid soap. Spray on. Leave 10-15 minutes and then hose off again. Repeat when necessary and after a rain. Not in the hot sun.
Try soapy water in a spray bottle
These are our easy tips for getting rid of bugs on plants. This post is to prepare them for bringing inside, but also works all year: https://chemistrycachet.com/how-to-remove-bugs-from-plants-before-bringing-inside/
I use neem oil!
Neem oil, either just a spray from the store or you can buy the actual oil and dilute with water in a spray bottle.