Close-yes, Fill-maybe not. Use the dispenser as a marker is a good idea, but it is almost always dump and will ruin you soap. I use tablets which are even more

Close-yes, Fill-maybe not. Use the dispenser as a marker is a good idea, but it is almost always dump and will ruin you soap. I use tablets which are even more sensitive to moisture, and are expected to stay dry and slowly dissolve in hot water.