Meeting two needs with one deed makes Douglas Grider, public works superintendent of Lake-port, Calif., a shrewd manager. He's combined two tasks - cleaning streets and controlling curbside weeds - into one smooth drive-by activity. He installed the WeedSeeker spray system on the back of his sole street sweeper, which scrubs all 32 miles of the city's streets each week. Here's how it works: Seconds after the sweeper cleans the gutter, the WeedSeeker follows up with a metered spray of herbicide if it senses plants growing in cracks and joints around curbs, gutters, and sidewalks.
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