The primary ingredient in a DIY color catcher is washing soda. Also known as sodium carbonate, washing soda (or soda ash) is a powerful cleaning agent, used for descaling bathroom surfaces and dissolving black junk on the bottoms of cooking pans. It’s a solvent that works by attracting dye and helping it bond to the fibers on the cloth of the color catcher, rather than the dye “floating” around in the water and being redeposited on other fabrics in unwanted places.
Please note that washing soda is NOT the same as baking soda, which is sodium bicarbonate. Washing soda is much, much more alkaline. It’s great for lifting stains out of fabrics — it’s also used for tie-dyeing to keep colors separate — but is also caustic and potentially irritating to skin, eyes and mucous membranes. Try not to touch it directly!
To make your own DIY color catchers, you’ll need the following:
- Several scraps of white felt or flannel, about 6″ square. If using flannel, zigzag around the edges to keep your squares from fraying in the wash and “shedding” all over your fabric.
- A large, wide bowl.
- Very warm tap water, about 2 cups.
- 2 tablespoons washing soda (found in the laundry aisle, likely next to the borax and laundry soap).
1) Mix the solution
In the large bowl, combine the water and the washing soda. Stir until all the soda has dissolved.
2) Soak the squares
Place all the felt squares into the water solution and stir them until they are saturated with water. Using gloves or tongs, squeeze out the extra water and hang them to dry.
3) Put them in the wash
Ta-da! Your DIY color catcher is now ready to be used in the wash with your quilts and other fabrics. They can be reused several times until they become saturated with color. If you wash a bunch of previously unwashed fabrics (particularly warm colors like red and yellow), you should be seeing some evidence of dye on the color catcher. If you don’t, this might be a sign that you need to increase the amount of washing soda in your original solution.