Unity Ads Initialize

I have questions, what is better and what is the difference?
I initialize ads → Advertisement.Initialize (“1348595”, false); every dead, is it good? Should I initialize Ads just once?

You only need to initialize Ads once in beginning of game. Nothing happens if initializing multiple times, but you should only initialize once.

And make sure you initialize somewhere in a Start() method in beginning of game, so Ads SDK has time to cache videos etc.

/Rasmus