If you want to learn how to get rid of aphids then you're in the right place. Learn various strategies including our homemade aphid spray.
Since this spray does not have a preservative, I only recommend keeping it on hand for a couple of weeks before making a new batch.
To make a neem oil spray for aphids simply mix 1 tsp of neem oil and 1/2 tsp of liquid dish soap to 1 quart of water.