Twice a year you should "de-grease" the vents of your oven hood. To do this:
- Wipe vents with a sponge and undiluted vinegar, or
- Remove vents and soak them for 15 minutes in 1 cup vinegar and 3 cups water.
- Finish the job by using a sponge to wipe entire surface with a mixture of half vinegar and half water. This will help prevent grease buildup.