Buy some lady bugs!! :)

Aphids as well as other pests; white-fly, spider mites, etc., are eradicated by home-made garlic and Murphy Oil Soap spray...
Here's a recipe I had in my notes (source unknown):
How to Make: Soak 3 ounces of finely minced garlic cloves in 2 teaspoons of mineral oil, canola oil, neem oil, or soybean oil for at least 24 hours. Slowly add 1 pint of water that has 1/4 ounce of pure castille soap or Murphy's Oil Soap mixed into it. Stir thoroughly and strain into a glass jar for storage. Use at a rate of 1 to 2 Tbsp. of mixture to a pint of water. If this is effective, try a more dilute solution in order to use as little as possible.
How to Use: Spray plants carefully to ensure thorough coverage. To check for possible leaf damage to sensitive ornamentals from the oil and soap in the spray, do a test spray on a few leaves or plants first. If no leaf damage occurs in 2 or 3 days, go ahead and spray more.
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Spraying Basics:
1. It is best to use any type of spray in the early morning or the cool of evening. Do not spray when temps are above 80 degrees Fahrenheit! Your plants may "burn" or have a reaction to what you are using in excessive heat. This is known as "phytotoxicity."
2. Always perform a test on a small portion of the plant material first. Wait 24 hours to observe any negative reaction. Proceed if there is no damage.
3. More is not better. If you are not getting good results don't increase the strength of these remedies without testing first.
4. Target just the area you need to treat. Be careful... try not to harm the good guys! You don't want to run off your allies.
5. When working with sprays or dusts always protect your exposed skin and face. Some of these ingredients can be very irritating to your skin, eyes and mucous membranes, especially any hot pepper sprays.

Thanks for the recipe.

The little buggers have just discovered my snapdragons! I didn't have such problems last year. Mostly I just had them on my roses and they were controllable. It's the black ones that seem to be the worst!

Lana