I have two websites, one is health based website, and other is the general website. Health site eCPM - $15+ General site eCPM - $3 to $4. One thing with my general site is, I can see a lot of clicks which pay just 1 cent per click! I blocked many advertisements of matrimonials and other social networking groups. But, still I need to get rid of many 1 cent sites which are targeting my site for cheap clicks. How can I better deal with these low paying advertisers? *Expert opinion needed*
don't do anything, it's both google's and your interest to get the highest paying ads. Some can pay low but are clicked often, so the eCPM is the highest possible on your general site.
Don't you able to control Ads which are appearing in your site ? At least Admob, or MobGold able to do this. However they are in mobile site only though.
Don't bother. Go for some more niches. Build some more sites. Learn how ants do amazing things when they are together.