Listen up, soldier! Home repair projects can be messy, creating dust, lots of dust. Before you know it, airborne debris from one sector is dropping all over your house spread by the enemy: your central heating and/or air-conditioning system. Your defense is to launch a strong offense (not some little dust mask backed up with a broom and a dustpan). You need to initiate mass captures and block the enemy's lines of distribution. That means covering all air-return grills with extra furnace filters taped into position. It also means mopping up stragglers with strategically placed box fans -- again supported with furnace filters. Dominate household airflow by capturing everything that floats, drifts or moves where it shouldn't be. You are the elite "dust-control patrol" -- the best there is at keeping things dust-free on any project in any home anytime, anywhere. That's all, dismissed! And that's the On The House tip for today.