I agree with what Barry has said, don't try and cut money here. Go to an auto paint jobber to get your tack cloths from them. Also when using them do not push down too hard, like you are wiping up a spill
. That will leave the residue from the tack cloth deposited on your paint surface and cause all kinds of problems. just a very light pass, a drag if you will across the surface is all that's needed.