Let me admit straight-out: I am picky about my bathtub scrubs.
A weird thing to be picky about, perhaps, but scrubbing the bathtub is just one of those jobs that I find totally frustrating with the wrong tools and totally satisfying when I have the right ones.
Pumice stone is my favorite scrub – bar none – but it's not easy to source where I live. Bummer.
But when I read Mama Natural's tutorial last month on how to make homemade calcium supplement from eggshells (which I also use for toothpaste), my wheels started turning.
Wouldn't ground eggshells provide just the right abrasiveness for scrubbing bathtub scum?
I mixed up a test batch, and sure enough – just right. Score!
So, here's a simple recipe to reuse your eggshells (even the conventional ones from chicken who eat soy and who-knows-what-else) to make a super-cheap, super-effective soft scrub for all your kitchen and bathroom cleaning needs!
The baking soda is included for degreasing, the essential oils provide scent and antibacterial properties, and the calcium gives it the oomph it needs to really get the tub clean.
For use as a dietary supplement, you MUST sterilize the eggshells to kill all pathogens – that's why we boil the eggshells in this tutorial. As a bathtub scrub, this isn't as essential, but I still choose to do this step because as the scrub sits for several months, I want to squelch any opportunity for mold and bacteria to grow in the mixture. Cleaning the bathroom with bacteria-laden scrub just doesn't sound that appealing somehow…
Also, while the essential oils are optional in this recipe according to your preference, remember that many essential oils have strong antibacterial properties, so they play a useful role in this recipe as well as an olfactory one.
Homemade Bathtub Cleaner
3 dozen eggshells to make about 3/4 cup of calcium powder
1/2 cup baking soda
15-20 drops of your favorite pure essential oil – I recommend something citrus-y
Rinse the eggshells well with plain tap water.
Meanwhile, place 3-4 gallons of water in a large stockpot and bring to a boil. Reduce heat to a gentle simmer, then carefully lower the eggshells into the water and let them cook for 10-12 minutes.
Remove the shells carefully and set them upside down on a baking sheet. Let them air dry for 8-12 hours, then place them in a 200° degree oven until they are completely bone dry, about 10 minutes.
Working in batches, place the shells in a coffee grinder and process until they are completely powdered.
Toss the finished calcium powder with the baking soda and essential oils and mix until the oils are well-distributed and no clumps exist.
Spoon into a pint-sized Mason jar, then lay a piece of plastic wire mesh over the mouth. Screw on the regular lid to fit very tightly and store in a cool, dark place. To use, merely remove the lid and rescrew on the ring to create a shaker. (You could also use a sprouting lid or anything else that strikes your fancy!)
homemade bathtub scrub / homemade b