I got mine from a nursery, can't remember the brand. It looks like Lowe's carries something similar in fairly small quantities:

http://www.lowes.com/pd_376550-304-52234EA_4294728545__?productId=3653920&Ns=p_produc t_avg_rating|1&pl=1&currentURL=%3FNs%3Dp_product_a vg_rating|1&facetInfo=

Product description says this is spun/bonded, which I believe is what I have, not the polyethylene waffle stuff (which you don't want)

Regards,
Scott