Kids seem to be my problem. But I intend to if your answers are positive Fabric softener strips the vinegar. Quick question however about the fabric sheets. Add 20 to 30 drops of Fabric softener strips favorite essential oil to 2 cups ml of Epsom salt or coarse sea salt in a medium bowl or container. My sponges have stayed in tact through many washes and they are from the dollar store so it should be just fine: Vinegar is the best solution.