We’ve always stuck the little vacuum cleaner hose under there to get the dirt, but after 5 years there was sticky gunk all over the floor.
I was able to take everything out of the room that wasn’t food or food related except for the vacuum cleaner, and was able to stack our extra drinks in the corner so they wouldn’t be in our way when we walk in and out of the pantry.
I didn’t change much in the “bathroom”, but I was able to get the kitchen door out of there! Just in case you are wondering, we removed the door from the kitchen a few months ago. The doorway is very narrow, and felt even smaller with the door. So, we took it off!