Stir all of the dry ingredients together in a bowl, mix them thoroughly. Using a whisk really mixes everything well and keeps it from clumping up.
Add the essential oil(s) and mix well again to distribute through your mixture.
Very slowly add vinegar a little at a time, stirring until well mixed. It will bubble some as you mix, it’s a simple scientific reaction really! The mixture should clump and hold well when squeezed in your hands.
Press firmly into the silicone mold, remember to use one with small enough shapes so that they will fit in your dishwasher tab door.
Allow to dry over several hours or overnight until completely hardened.
Carefully pop them out of the mold and place in a jar for storage- keep them dry until ready for use.
