Sinks are the workhorses of homeowners kitchens and bathrooms and as such should rank highly on peoples list of maintenance chores, it has been argued.According to an article by Readers Digest, there are a number of ways to ensure that your kitchen sink remains in top condition.Dont let fruit, vinegar, salad dressing, or other acidic foods linger on the surface of a porcelain enamel sink. Long-term exposure to acids can cause staining and could etch the surface, the article recommends.In addition, homeowners are encouraged to use baking soda as a means of keeping sinks made of nonporous, acrylic-based solid surfacing as good as new.The article says that stains can be rubbed out using baking soda and water which has been mixed to a toothpaste-like consistency.Lemon juice and vinegar are also touted as essential ingredients to keeping a kitchen sink sparkling.Meanwhile, Lifehacker.com has reported that stainless steel sinks can be used as an effective method of removing kitchen odours from hands.