Article: Gel toothpaste won't clean your shoes properly and there's a big chance that it will stain them. Gel toothpaste is especially bad for white shoes. You can use colored toothpaste if you have that lying around your home, but it won't clean the shoes as well as white toothpaste. Get an old toothbrush or a cheap, new toothbrush. There's no point using an expensive, brand new toothbrush to clean your dirty shoes. You won't be able to use it to clean shoes again and you definitely can't use it to brush your teeth. An old toothbrush is perfect for the job.

What is a summary?
Buy white non-gel toothpaste.