Ok, so I did a search here, and I still dont know where to get them other than ordering them from CHS. Any alternatives? I have been to Walgreens and to CVS, and I cant find anything there that looks like them, partly because I dont know what size they are. Also: do they work? I just kind of got the technique of clipping the top horizontally as per the Deva method...are the roller clips better? how?