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Kerry, We feel for you. HereKerry, We feel for you. Here is a helpful guide for organic control of the flea beetle for potato crops. As you'll see, the key to organic control is to start very early with sanitation of overwintering sites:

2015 Special Edition Garden GuideCooking Fresh with The Old Farmer's AlmanacThe Almanac Monthly Digital MagazineWhat the heck is a Garden Hod?