Generally, once it’s dry, it’s a permanent stain, and likely some deterioration of the materials. It won’t be major damage, as in making them fragile, but they won’t look nice.
Remove all visible matter, obviously
Get a bowl and an old toothbrush, along with some rags.
Laundry detergent, preferably without dyes or scents. Be aware, that the colors in some detergents will stain leather, and might the soles.
A few drops of white vinegar, a few of the detergent, and some warm water in the bowl. Dip the brush and scrub gently until as much of the more ingrained matter is gone, and you’re no longer seeing the brush pick up anything that discolors the liquid. Now, in most shoes, that might never happen, so you might have to settle for it reaching the point where the colors of any stains are even. No telling unless I was there and doing the work; even pics wouldn’t help.
Switch to plain water, and clean the brush well, so that you can use it to remove soap residue.
Use the rags to dry the shoes as much as possible once finished.
The next part is where you gotta buy stuff. You’ll need a leather conditioner, and a cork sealant/conditioner if the cork was soiled. No way around it, no shortcuts because you’re already going to be stripping some oils from the leather, so cheaping out makes no sense. But it can be the inexpensive stuff.
Also, don’t use other kinds of soap. Laundry detergent is going to strip the least amount of oils.
You can maybe get by with bypassing all of that if only the leather is dirtied, and just buy some leather cleaner, but I can’t say it works any better; it just takes less steps.
From there, air dry. You can use a blow drier on low heat if you want
Generally, once it’s dry, it’s a permanent stain, and likely some deterioration of the materials. It won’t be major damage, as in making them fragile, but they won’t look nice.
Remove all visible matter, obviously
Get a bowl and an old toothbrush, along with some rags.
Laundry detergent, preferably without dyes or scents. Be aware, that the colors in some detergents will stain leather, and might the soles.
A few drops of white vinegar, a few of the detergent, and some warm water in the bowl. Dip the brush and scrub gently until as much of the more ingrained matter is gone, and you’re no longer seeing the brush pick up anything that discolors the liquid. Now, in most shoes, that might never happen, so you might have to settle for it reaching the point where the colors of any stains are even. No telling unless I was there and doing the work; even pics wouldn’t help.
Switch to plain water, and clean the brush well, so that you can use it to remove soap residue.
Use the rags to dry the shoes as much as possible once finished.
The next part is where you gotta buy stuff. You’ll need a leather conditioner, and a cork sealant/conditioner if the cork was soiled. No way around it, no shortcuts because you’re already going to be stripping some oils from the leather, so cheaping out makes no sense. But it can be the inexpensive stuff.
Also, don’t use other kinds of soap. Laundry detergent is going to strip the least amount of oils.
You can maybe get by with bypassing all of that if only the leather is dirtied, and just buy some leather cleaner, but I can’t say it works any better; it just takes less steps.
From there, air dry. You can use a blow drier on low heat if you want