Age restriction on adds?

I am currently investigating the possibility to use the Unity Adds in my mobile app game. Although the game is directed to older children, I want it to be possible for smaller children to also be able to play the game.

So my concern is: I don't want to be responsible for showing adds that include vampires, zombies, aliens, monsters, occult, half-naked women, blood and gore, etc. to small children which might traumatize them.

I would rather be limited to only one or two safe adds than having a thousand different adds that defile my game's experience.

Question: Is there a way to restrict the Unity Adds to "All Age" content so that adds that contains the above mentioned material?