I WOULD NOT RECOMEND THE USE OF THIS PRODUCT!!!!!!!!!! THERE WAS A POST EITHER HERE OR ON ONE OF MY JANOME YAHOO GROUPS....IT MAY NOT GUNK UP YOUR NEEDLE, HOWEVER, WHEN THE MACHINE REPAIR MAN OPENED UP A JANOME MACHINE WHERE THIS WAS USED, THERE WERE THOUSANDS OF TINY ROUND PIECES OF THE PLASTIC INSIDE OF THE MACHINE, CAUSED BY THE NEEDLE PUNCHING LITTLE PIECES OF THE PLASTIC OUT AS THE NEEDLE WENT THROUGH IT. I would not recommend this at all. Diana