How to use Competitive Ad Filter?

Not every time, the ads delivered by Google is relevant. Or the ads shown is your keen competitor. In this case, you need to screen the ads out. In Adsense, it allows you to filter those unwanted ads with the use of competitive filters. The Competitive Ad Filter enables you to block specific ads, such as competitors’ ads, from appearing on your pages. This option is available under your Adsense setup tab and is called the Competitive Ad Filter. You can block ads across all subdomains, block only ads across a certain sub-domain, block all ads below a specific directory or block all ads for a specific page.

So I have decided to block google from showing their own adwords ads promoting their products on my website/blog. I’ve done this to show more relevant ads and well just to take that annoying “get your blog with google” and “Monetize your site with google adsense”. But beware, the competitive ad filter takes some time to take effect. According to Google Help, "Please note that Google does not commit that all ads for the websites that you add to your competitive ad filter list or ads containing objectionable content will be prevented from display on your site."