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Title: Don't waste your money!
Review: Very disappointed. Purchased 6 of these for an 1100 sq. foot apartment to eliminate the common spider and occasional ants and insects that appear in the Spring and Summer time. Well, I think these units INVITE the ants in. We've never had more ants than we do now despite following directions to place these units on opposite walls in the same room, etc. These devices do not phase them at all - they continue to parade right by!
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