No matter what type of coffeemaker you have, you should be keeping it clean. In a study in 2011, the coffeemaker reservoir was the fifth dirtiest (mold, spoors) in the typical home.
So how should you clean it? First, make sure to clean the filter basket, lid, and pot in warm soapy water daily. Just a hot water rinse isn’t good enough. One of the best cleaning products for your coffeemaker is vinegar. You can use this to help sanitize, decalcify and remove mineral buildup from tap water. (If you can, you should make your coffee with filtered water.) If you have hard water, decalcify once a month, otherwise every two to three months.
Your manual should tell you how to run vinegar through to clean it out. If not, here is what you can do. Fill the chamber with half white vinegar/ half water. Use a paper filter and allow to brew until half empty. Turn off and let sit for 30 minutes. Finish brewing. Rinse by putting in a new filter and brew just water twice. You can use rice in the carafe as an abrasive with some warm sudsy water to remove any gunk. (We’ve also had luck with a little bit of dishwasher detergent but be sure to rinse well.) Enjoy germ-free coffee!