NL Cash - how to deal with calling stations

[Vinetou]

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your theory sucks. seriously it isn't hard to beat these people. limp a lot on the button with your other marginal hands since they don't raise and just value bet them like crazy.

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Calling stations are not so stupid that they would call a 10 dollar bet into a 4 dollar pot, that is why I think about raising preflop. However, I was wondering if this theory just increases varinace but I don't feel so. If I want to stack them when I flop the monster, I have to raise preflop. Otherwise I just can't.