If you are one of those organic people then ladybirds will control them if not bast them with pesticide.
http://wiki.answers.com/Q/How_do_you_Get_rid_of_greenfl...
A better line of attack is to encourage other insects which feed on aphids. Research has very positively shown that planting certain plants (e.g. tagetes, calendula, ... This helps the hoverfly to easily reach the pollen. After feeding, the adult hoverfly will then lay her eggs on colonies of greenfly and black fly.
gardenaction.co.uk/techniques/pests/aphids.htm gardenaction.co.uk/techniques/pests/aphids.htm
If you hate using chemicals to get rid of greenfly then try using washing up liquid mixed with water. Then spray onto the infested area. Another way is to remove the aphids by hand on a regular basis.
www.doctorgreenfingers.co.uk/Pest_control_Cats_Ants_Dog... www.doctorgreenfingers.co.uk/Pest_control_Cats_Ants_Dogs_Slugs_Snails_Aphids/How_to_kill_and_deter_greenfly_Aphids.html
The RHS’s online community for gardeners ... A good spray that works well for getting rid of greenfly is to grate up and mix some olive oil soap into enough very hot water to dissolve it, then top it up with cold water. ... And any greenfly or crickets soon get munched by all the birds in the garden - and just to prove it :
mygarden.rhs.org.uk/forums/p/17840/18019.aspx
How to Get Rid of Aphids and Make Rose Bush Food naturally ... How to Get Rid of Aphids in a Greenhouse...
www.ehow.com/how_4030_rid-aphids-naturally.html www.ehow.com/how_4030_rid-aphids-naturally.html
How to Get Rid of Aphids. Aphids are tiny garden pests that feed on the sap of plants and flowers. If left unchecked, these beasties will cause discolored leaves, deformed flowers and other destruction to an otherwise well... ... How to Get Rid of Aphids in a Greenhouse ... How to Get Rid of Aphids and Make Rose Bush Food naturally...
www.ehow.com/how_2066239_get-rid-aphids.html www.ehow.com/how_2066239_get-rid-aphids.html
Home > Gardening > How to Get Rid of Aphids ... Synthetic and equally effective forms are called pyrethroids. The brand Safer uses these in there insecticidal soaps. Bonide, Schultz and Pyola are other good brands.  So, now you know how to get rid of aphids. Hop to.
www.getridofthings.com/get-rid-of-aphids.htm www.getridofthings.com/get-rid-of-aphids.htm
The multicolored Asian lady beetle, scientific name Harmonia axyridis, is a lot like lady beetles native to North America. They are similar, though not identical, in appearance, and both are helpful in getting rid of aphids and other small garden pests. ... Home > Pest Control > How to Get Rid of Asian Beetles...
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An average house would need 100 gallon yield, using 4 gallons per 10 linear feet. Please read label to determine dilution rates or give us a call. ... How to Indentify Argentine Ants:
www.doyourownpestcontrol.com/arg.htm
Females in the nest lays one egg daily. It takes an average of 24 days for the young to reach adulthood. The nest colonies range from 100 to 10,000 ants, but can be driven away by invading Argentine ants. ... HOW TO GET RID OF ODOROUS HOUSE ANTS...
www.doyourownpestcontrol.com/odorous.htm