Your Best /Creative Way To Prevent Clickfraud on Google/Bing?

Hello everyone!

I'm dealing with competitors clicking my ads, I know its a cost of doing business but it has been something that I know other people are dealing with as well once you scale.

Ideas on how to prevent click fraud?

Here's what I have so far:

Don't show ads to users who visited website before
Target by age/gender/ interest
Clickfraud software to exclude IP's.


Any of you guys have any more creative situations / tips that you have come up with ?

This is a big issue in this industry as $42 billion dollars of ad spend is wasted each year from clickfraud.

You can contact support about that. As far as I know, it will auto adjust your valid clicks and the costs.