Maintenance in general is something I like to do, just not with my shoe’s..
My summer hiking shoe’s which I own now for 5 years or so, I cleaned them once properly, and twice put some leather cream on it.
The winter ones I own 1.5 year now and never have been cleaned before.
They have been in many dirty places, sand, gravel, mud, swamps, water, etc.
Today I cleaned them both, using the shoe cleaning kit I bought some time ago in the army dump store.
This is the content. I marked both black brushes on the right with “brown” and the other one “black”, as well as the smaller hand brushes on the left in the same way. So I will not accidentally switch them in the future.