Dry brush: You should dry brush your shoes on a regular basis.
Cleaning supplies: If the brush can not handle it anymore, it is recommended to use a special leather cleaner or clear water. Attention! Soapy water would damage the waterproofing and leather.
Wet shoes: It is the best to stuff the shoes with paper und place them on a warm spot. Do never put them in front of the radiator, because the leather can become brittle and the shoe deforms. The paper should be changed regularly. After that, please use a leather care cream.
Waterproof your shoes: Waterproof sprays or wax protects the leather of your footwear.
Tip: Shoes should be aired out properly after every use.