Answer: Slugs probably are eating the foliage of your pansies. To make certain, go outside at night with a flashlight and see if you can catch them in the act. Hand-pick them as you find them. You can make effective slug traps out of cottage cheese or margarine tubs. Make a couple of windows by cutting one-inch squares out of alternate sides of the tubs, fill with a few inches of beer, top with lids, and sink the traps into the soil, about an inch below the openings. (That way beneficial ground beetles won't accidentally fall in and get trapped.) Slugs will be attracted to the beer, crawl into the traps and drown. Empty and refill as necessary until you've lowered the slug population in your garden.
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