These weighted spouts are better than sliced bread! They fit in all of our bottles and are a necessity for drizzling. S your product by using a weighted spout. It controls the pour flow and allows only a thin stream of oil or vinegar to pass through. So, instead of dumping the product and using too much, the spouts ensure that you only use the amount of product you need. They can be used over and over. Simply rinse with warm soapy water to clean.