Organic Soap-and-Oil Spray
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Soap-and-oil spray is the easiest homemade spray to make and is very effective for controlling a wide range of pests.
Start by mixing a concentrate solution to keep on hand by combining 1 cup/.24 L of vegetable oil and 1 tablespoon/14.8 ml of liquid dish soap. To dilute this mixture to use in your garden, combine 2 teaspoons/9.86 ml of the concentrate with 1 cup/.24L of water. Put the mixture in a hand sprayer and spray it on infested plants. Be sure to wet both tops and undersides of leaves.
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Excerpted from The Veggie Gardener's Answer Book by Barbara W. Ellis. Copyright © 2008 by Barbara W. Ellis. Excerpted by permission of Storey Publishing. All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.