Slowly add castile soap, mixing until a thick paste forms.
Adjust consistency by adding small amounts of castile soap or water as needed.
Stir in essential oils, if using.
Use immediately or store in an airtight container.
To Use
Apply to surfaces with a sponge or cloth, scrub gently, then rinse clean.
Notes
If you plan on storing some of this cleaning paste for future use, make sure to keep it in a very air tight container so it doesn't dry out.You also might wish to leave some air space at the top in case it does dry, since that will cause it to expand. It's no fun having a container break--especially if you use a glass one!