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An adult greenhouse slug is 50 to 70 mm in length. The body colour is grey or black without distinct markings or patterns. The mantle is slightly granulose but not concentrically wrinkled, the central portion bounded by a horseshoe-shaped groove. The breathing pore is on the right posterior half of the mantle. The body is strongly keeled from mantle to posterior end. The mucus is colourless. |
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Not the least toxic, but the easiest and most reliable method of slug control is placing poison slug bait around the garden, said DeAngelis. Metaldehyde is the most common active ingredient. Metaldehyde causes slugs to slime heavily, revealing their presence. Cereal-based metaldehyde baits tend to be more attractive to slugs. |
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