While it is important to regularly clean and maintain your car to keep it free from harmful dirt and contaminants, the underside of a car is often overlooked and left neglected. It is important however to also clean the underside of your car to ensure that harmful dirt and contaminants are not left to accumulate and so that the large variety of components are able to operate properly. It is especially important to try and keep the underside of your car clean if it is used off road at all, or if it is used in areas where it is subject to an excess of road grime or surface salts during winter months for example.