Been doing a lot of cooking lately? Been using your kitchen range hood to draw out smoke and excess moisture without removing and cleaning the filter? If it's been a while since you checked it, or if you never thought about it all, today's a good day to get it done. Up inside, you'll find a mesh filter -- probably a bit sticky from built-up grease. Remove it and let it sit in a sink full of hot water and liquid dish detergent. Then scrub both sides with a brush and rinse clean with more hot water. While there, wash out the inside of the hood, too. An important tip to remember: Lots of folks say putting your filter in the dishwasher gets it nice and clean. This is true, but it leaves a greasy film behind that's really hard to get off. Besides messing up the dishwasher inside, it can clog the drain lines. And that is your On The House tip for today.