Mary Kay, I LOVE your print-outs!
I have only ever printed on fabric with an inkjet printer and do not feel comfortable recommending that you try it with a laser printer. All of the pretreated fabric sheets are made for inkjet printers only. That said, I just did a quick google search and it appears that some people have printed on fabric with a laser printer and claim that you don't need to treat the fabric. HOWEVER, I personally would NOT try this since laser printers are much more expensive than inkjet printers and if the fabric gets stuck in the printer and/or the backing (aka freezer paper or full-sheet label) gets stuck on the drum, you will have a VERY expensive repair bill! If you have an old laser printer lying around that you don't mind trashing, then go for it (and let us know what happens!
) Otherwise, I recommend you stick with inkjet printers.