I agree with Aydin. If the specimen is for display purposes and you want to clean it up, leave it in the alcohol for a few days, then take the specimen out and wash it in water with a little detergent, to remove the slime and coagulated fat deposits. You can use a soft brush to get into crevices. Rinse well under running water, and return to fresh alcohol. Even if the original alcohol looks clear, replace it, as it has been somewhat diluted by water from the snail tissues, and probably contains other dissolved substances as well. Paul M.