Strongid feed through

Does it work on mane thread worms? Never mind. I see that it does not. So now though I am reading that the worming needs to be done every 2 weeks...!!?? Argh. I'm having a skin scrape done. Well - this suggests that it does: http://www.farnamhorse.com/dewormdetails/neckthreadwrms.php" onclick="window.open(this.href);return false;