Answer: You are wise to do your homework where chemicals, children and pets are concerned. Caseron is a pre-emergent herbicide. The active ingredient is dichlobenil, which is not registered for use in vegetable gardens. It is used mainly for weed control around woody perennials. There is an alternative to Caseron called Preen. It is registered for use in vegetable gardens and the main ingredient is corn-gluten meal. It, too, is a pre-emergent so all of the existing weeds must be pulled from the site. After planting your veggies, you can use Preen to keep weed seeds from germinating. Here's a web address for more information on Preen: http://www.preen.com/newpreen/prdpreenveg/app.jsp
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