Admob House Ad only when no fill
<p>I am struggling with Admob fill rates. Fill rates in some countries (like UAE, Pakistan) is ver very low - sometimes it is as low as 20%. </p>

<p>I am concerned about this low fill rate and to address it, I have configured house ads with ecpm as $0.01 assuming that unfull-filled requests would display house ads. Both text ads (for banners) and image ads (for interestial) have been configured as house ads. </p>

<p>Low ecpm is to ensure that house ads are displayed only when there is no inventory / ads available with Admob. </p>

<p>However, the house-ads are also not getting displayed. The fill rates is still very poor. I failed to understand why? </p>

<ol>
<li>Is it that house ads are not configured properly. Do i need to change the ecpm value? </li>
<li>Do house ads improve the fill rate?</li>
<li>Is it that in some countries Admob doesn't have too many advertisers? Should I switch to some other ad network?</li>
<li>Will mediation help?</li>
</ol>

<p>Thanks in advance for the help. I have gone thru so much of documentation online but still not able to understand what is causing such a low fill rate. </p>

<p>Regards</p>