Our Help Center article has info which may answer your question: https://goo.gl/9WwgQ7 . Hope this helps.
@TeamYouTube Dear YouTube! Could you confirm for me please the rules concerning sponsored-in-kind videos? Do we need to tick the little 'sponsored' ticky box if there is no monetary payment? Many thanks!
-
-
-
Unfortunately it doesn't help as it only refers to paid products and, unless I've missed it, doesn't distinguish between monetary payment and payment in kind.
End of conversation
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

Slytherin.