White Flies

Bruce writes~
Every July-Aug my vegetable garden and tropical plants are destroyed by white flies. I have tried all safe insecticides, soap, and systemics. None have helped.

A. I have not used natural control of insects due to their lack of effectiveness in my opinion. But, I have accumulated a list of websites for you to check and see if there are products which you can order and apply to your unfortunate infestation:

eBugs.com - WHATEVER WORKS - Website Catalog of Natural Pest
www.whateverworks.com
www.whateverworks.com/insect_natural_enemy.htm

Natural Pest Control: from Ants to White Flies.
www.sutton.com/resourcecentre/Home_Renovations/pest_control_ants.html

Midwest Biological Control News
www.entomology.wisc.edu/mbcn/fea511.html
www.entomology.wisc.edu
Fruit and Vegetables
Effectively controls White flies, Aphids, Caterpillars
www.biofac.com/biofac/Fruit___Vegetables/fruit___vegetables.html

Pests, Pathogens and Predators, White flies, insects
This page explores ways to control Pests (white flies, aphid, mold and others)
in the lack of natural environmental checks. 
www.granitehydro.com/learn/pests&diseases.html

Champons Products - INSECT CONTROL CONCENTRATE
Mites, thrips, armyworms, white flies, fire ants, grasshoppers
Natural Chemicals Control Concentrate safe 
www.champon.com/products/prod_bugitol.htm

Natural Pest Control for Your Home
Insect/disease control indoors: Many insect pests (APHIDS, WHITE FLIES, SPIDER MITES, etc.)

www.renres.gov.yk.ca/environ/home.html

MEL: Pests and Pest Management
Natural Control of Insects; Pest Control Research Laboratory; White Flies and Their Control mel.lib.mi.us/science/pest.html

Non-Pesticidal Control of Insects - Environment Canada
Useful means of control. Remember, insecticides will also eliminate these natural
predators. Removing and ... insect pests (aphids, white flies, spider mites)
www.mb.ec.gc.ca/pollution/pesticides/ec00s08.en.html

Planet Natural Catalog - Natural Pest Control; Insect Traps
Create a natural balance of organisms...a large number of flies without insecticides.
www.planetnatural.com/naturalpestcontrol1.html

Natural Pest Control - use these herbs to repel bugs  
www.victorpest.com/herbs.htm
Diatomaceous Earth Controls

White Mountain Natural Products, Inc. White flies, fungus gnats.
VEGETABLE CROPS: aphids, vegetable weevils, webworms
www.whitemountainnatural.com/insects.html