Unplug the treadmill from the wall outlet (if electric).
Spray an even but light coating of the cleaner on the top surface of the belt.
Wipe all non-belt areas dry once coat is applied. It will not harm them but it can soak into the back of the belt.
Allow belt to soak for a few minutes.
For extra dirty belts, you can use a nylon tire brush to scrub the top surface of the belt. Do not use any type of metal brush.
Turn belt by hand until the next unclean area is exposed and repeat. You will have to spray cleaner three times until the entire surface area is clean. Repeat if necessary.
Allow the belt to air dry before use.
If you wish to clean the underside of the belt, you must remove it from the treadmill, follow the steps above, and let it completely dry before reinstalling. If cleaning the underside, put 2 times the amount of lubricant back on the belt that you typically use for relubrication.