On the site listed as your homepage in your profile, why are there "page cannot be displayed" messages where (logically) adsense adblocks should be?
I do wonder if the reason you use adwords is simply to buy traffic - you don't actually sell anything. The intent being the hope that the traffic you acquire at 5c per click will be funnelled to your advertisers that pay more than minimum?
I can see that scrapers might work for you, but they don't work for others. Having junked scrapers and made for adsense sites by using the blocklist I'm getting 35-40c per click - today it's running at 53c per click.
Sooner adsense adds a nice little tick box to exclude minimum bid advertisers the better. When it costs scrapers as much to acquire traffic as they get from funnelling the traffic to real advertisers, the sooner they start dropping off the twig.