Knowing and understanding the material your boots are made of is important. It will help you keep them longer and better.
Leather is a great material for boots. However, it does have specifics when it comes to cleaning and taking care of it. There are prescribed leather cleaners that are tailored for leather.
A clever hack to keep your boots dry as you clean them is to put an absorbent material inside, like a towel. This will help keep air and moisture out.
You can then use the leather cleaning agents of your choice, making sure to keep the inside as dry as possible. Whilst it may not be a cardinal sin to get the Inside wet, it reduces the amount of time you need to dry the shoes.