Cooker hoods over your oven or stove become soiled just like any other appliance. Expect to find quite a bit of dust and perhaps fingerprints on the front side of the hood. On the inside, you can expect to find grease splotches, sauce stains and a dead fly or two. Try to wipe down the outside of the cooker hood every night, and the inside at least once a month.
Preheat your oven to 176 degrees C.
Remove the grease filter (located on the inside of the hood). The filter should be held in place by small tabs. Push the tabs to the side and pop out the filter.
Place the grease filter on a baking tray and place into the oven. Let the filter cook while you clean the rest of the hood.
Wipe down the outside and inside of the cooker hood with your washcloth. Remove as much dust as you can.
Fill your bowl with one part water to one part vinegar. Place your second washcloth into the bowl and swirl to mix.
Wring out any excess moisture from your washcloth and wipe down the front of the cooker hood. Use a quick, circular motion with medium to firm pressure. Vinegar is a good degreaser. If your hood is especially greasy, use the vinegar at full strength.
Wipe away down the outside of the hood with your third washcloth to dry. Use a quick, circular motion with medium pressure.
Place your wet washcloth back into the vinegar mixture and wring out any excess moisture. Wipe down the inside of the cooker hood. Get into the corners and around the light bulb. Allow the inside of the hood to air dry. No one will see the inside, so the swirl marks from the washcloth won't be noticed.
Remove the baking tray from the oven and set the grease filter aside and allow to cool. The heat from the oven will have melted all of the grease from the filter.
Run the grease filter under water once it has cooled. Scrub away any leftover grease and then dry. Put the filter back in its place.