Toilet Bombs

Author Photo
By Rebecca Sullivan | Nov 12, 2019

Photo by Nassima Rothacker

These are so cool. I prefer to make them without a mold, but you can do either. If you’re not using a mold, you may find your mix is too dry, so just add a few drops of water until you can shape the mix into balls. Leave them to dry properly before storing. If they break, fret not, as they still do their job.

Makes 10–12 toilet bombs


  • 1–1/4 cups (250 grams) bicarbonate of soda
  • 6 tablespoons (80 grams) citric acid
  • food coloring (optional)
  • dried flower petals, such as rose or lavender to decorate, slightly crushed (optional)
  • 10 drops of rose essential oil
  • 10 drops of lavender essential oil
  • 5 drops of lemon essential oil
  • rubber gloves
  • cotton face mask
  • spray bottle
  • glass jar, for storage
  • ice cube trays or jelly molds


  1. Wear rubber gloves and a face mask, not because the citric acid is a bad chemical, but it is strong and if it goes down your throat the wrong way you will cough. Mix the bicarbonate of soda and citric acid together in a glass bowl. Fill a spray bottle with some cold water and then very gradually spray water into the mix in the bowl, stirring as you go. You want to add just enough water (so hardly any) to make the ingredients stick together. You can add a few drops of food coloring or dried flower petals too, if you like.
  2. Add the essential oils and continue mixing. Form the mixture into single-use sizes by pressing into small ball shapes or similar walnut-sized balls using your hands (or you can use individual molds, such as ice cube trays, to shape the mixture). Place them on a tray and leave to dry overnight, then carefully transfer the bombs (popping them out of the molds, if necessary) to a glass jar or other airtight container and close the lid. These will keep for up to 3 months.
  3. To use, drop one into the toilet pan, leave it to dissolve and flush on the next use. Use as necessary, but no more than once a day.

More from The Art of Natural Cleaning:

Cover courtesy Kyle Books

Excerpted from The Art of Natural Cleaning by Rebecca Sullivan published by Kyle Books, 2018

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