On this day in 1910, W.M. Frost patented the first electric bug zapper. To this day they're seen on many patios and decks where they still do a good job -- but only at night and in a limited area. For those who want to get lots of fresh air, cook out, get sun or enjoy the view, another longtime favorite from years gone by is making a big comeback. Today, screened-in porches and decks are popping up everywhere -- and for good reason. They work both night and day (unlike aerosol sprays, citronella candles and electronic zappers). If you're building a deck or want to debug part of an existing one, don't forget to bugproof the floor, too. Your best bet is to replace the screened-in floor area with tongue-and-groove boards that will still expand and contract a bit with seasonal change and varying moisture, but will effectively keep crawlers out of your space. The screening keeps airborne pests in their place. And that's the On The House tip for today.