Akademik

Не в коня корм
This man can not appreciate or is unworthy of what is done for him. See Не мечи бисер перед свиньями (H)
Cf: Don't cast pearls before swine (Am., Br.). Honey is not for the ass's mouth (Br.). It is caviar (caviare) to the general (Br.). That's money down the drain (Am., Br.)

Русско-английский словарь пословиц и поговорок. . 2013.