I first discovered using essential oil washer and dryer sheets when a friend stayed at our house while we were away.
She used her own scented laundry detergent in the washing machine. When I got home and started to do my own laundry, the machine smelled like a synthetic chemical detergent. (I wondered if we could still be friends!)
It occurred to me to add some essential oil to a wash cloth and run the washer without any clothes. I added drops of Lemon and Siberian Fir essential oils to a wash cloth and ran the machine (I’ll never admit how many drops of essential oil I used). It worked!
I realized I could add a damp wash cloth with essential oils to the dryer as well, and now I use my essential oil washer and dryer sheets regularly when I do laundry.