Good grief, I've never heard of that. I used to use the Bubble Jet Set & treat my own fabric for printing, and that's fine if you're doing alot, but if you just want a label here & there, the fabric needs to be used as soon as it's treated. I went to this site & read a few of the reviews, looks like you managed to find one of the few that needs (or says it needs to be dry cleaned)
http://store.quilting-warehouse.com/...er-fabric.html If you think you will have a little extra, maybe try making a very small sample one & washing it to see the results.