Peckish

I feel the same about not using the Frixion pens. I have the soapstone pencil and it sucks, don't waste your money.
For darker fabrics, I've used slivers of bar soap, it works very well. So does the chalk BUT keep the package instructions! I am amazed at how many people buy a marking product, don't keep the packaging, and can't remember how to remove the marks. The chalk markers become permanent once you iron over them - something to keep in mind.