How to show google ads appear only only once per visitor?

Marketing
1

how to show google ads appear only once per visitor?

is there any script to do that?

thx

2

I heard Google controls the running ads totally. The publisher can’t change the ads, but can filter the ads.

3

use an AdServer like DFP Small Business and enable frequency capping

4

how much does that cost? how to get it? can provide more info?

thanks!

5

Here you go: How to set up DFP Small Business for serving Ads on your sites