TrafficGuardian is a really good tool for native ads. I’ve been using it for the last 6 months, and it has been working very well for my ad campaigns. The traffic filtering is solid too, and it blocks fake clicks effectively. Review collected by and hosted on G2.com.

The monthly plans are a bit expensive if you are just starting out with low traffic. It takes some time to understand all the advanced settings properly at first, but once it is setup it works fine Review collected by and hosted on G2.com.