Using a soap based spray is a good way of getting rid of mites and the 500+ types of aphids. I have grown organically for several years and I have a healthy thriving wildlife population. Bluetits, sparrows, ladybirds are great getting rid of aphids. Failing that, just rub off the pests with your fingers. Companion planting also helps - growing marigolds beside herbs & tomatoes saves the crop
I absolutely loathe the damage by slugs and snails . How do other people get rid of theirs? I like to use value beer traps or go out with the salt pot!!