Pepper leaves are pale, curled up and have dark spots. Infested with aphids. What to do?

I bought this pyrethroid-based spray from Home Depot: Bayer Advanced 706120A NATRIA Insect, Disease and Mite Control Ready-to-Use, 24-Ounces for $6 ($11 at Amazon).



The product is a contact killer for both insect and mite pests. It also supposedly controls a wide range of fungal diseases and pests. For use on Roses, Flowers, Houseplants, Ornamental Trees and Shrubs, Fruits, Nuts and Vegetables.

It kills: Aphids, Mites, Spider Mites, Leafhoppers, Caterpillars, Rose Slugs, Whiteflies, Spittlebugs, Mealybugs, Scale, Thrips, Psyllids, Plant Bugs, Lace Bugs, Fruit Flies, Chiggers and Earwigs.

It controls: Black Spot, Powdery Mildew, Rust, Scab, Blight, Brown Rot and Leaf Spot.

It can be used up to the day before harvest.

Garden Safe Fruit and Vegetable Insect Killer contains the same volume as Natria (24-ounces) but has double the concentration of pyrethrins (0.02%):



Pyrethroid

Pyrethroid is an organic compound similar to the natural pyrethrins produced by the flowers of pyrethrums (Chrysanthemum cinerariaefolium and C. coccineum). Pyrethroids now constitute the majority of commercial household insecticides. They are generally harmless to humans. They are usually broken apart by sunlight and the atmosphere in one or two days, and do not significantly affect groundwater quality.

Mechanism of action

Pyrethroids are very popular insecticides because exoskeletons of insects are sufficiently porous to pyrethroids. They are axonic poisons and cause paralysis of an organism. The chemical causes paralysis by keeping the sodium channels open in the neuronal membranes of an organism. When the toxin keeps the channels in their open state, the nerves cannot de-excite, so the organism is paralyzed.

Pyrethroids are usually combined with piperonyl butoxide, a known inhibitor of key microsomal oxidase enzymes. Piperonyl butoxide prevents the insect's enzymes from clearing the pyrethroid from its body, maximizing the lethality of the pyrethroid.





Here are some pesticide options:

Garden Safe Insecticidal Soap Insect Killer 24-Ounce Ready To Use Spray 10424X http://amzn.to/Mz094m

Bayer Advanced Fruit Citrus Vegetable Insecticide http://amzn.to/Mz0iEJ

Green Light Organic Neem Concentrate - Pint 17016 http://amzn.to/Mz0l3x

Monterey LG6135 Garden Insect Spray Contains Spinosad, 32-Ounce http://amzn.to/Mz0eVr

References:

http://en.wikipedia.org/wiki/Pyrethroid