I tried it, and I have to say, it really does a good job of removing odors and soap residue from clothes. And they look brighter!
I mix mine in a 10 quart bucket, then transfered them to Mason jars because I had a couple different scents and momma didn't know what she wanted for sure.
I highly recommend doing this in a mop bucket. I bought a new 10 quart one and it worked perfect for a decent batch. It's so quick it was easy to do 2 batches.
Homemade fabric softener recipe!
1/2 cup baking soda (bicarbonate soda :)
3 cups white distilled vinegar
4 cups water
Essential oil of your choice
Add 1 cup plus 1/2 cup baking soda to bucket.
Add the vinegar slowly.
Then add the 3 other cups of water.
After it's settled (you will see what I mean), you can add essential oils to your own preference.
You can either add it to the softener doo-dad on your washer (I'd clean it out first) or use a Downy ball.