throw biscuits after bad dogs

[chitchit]

Dear teachers,
If someone throws biscuits after bad dogs, does it mean that they give something to whom not derserving it?
Thank you.

[Naamplao]

Dear teachers,
If someone throws biscuits after bad dogs, does it mean that they give something to someone who does not deserve it?
Thank you.

Yes, that would be a good interpretation. However I have never heard of such an expression.

[Anglika]

Dear teachers,
If someone throws biscuits after bad dogs, does it mean that they give something to whom not derserving it?
Thank you.

An English saying that expresses the same is "casting pearls before swine".

[Barb_D]

Well, I would agree that "casting pearls before swine" means that you are giving good things to people who don't appreciate/deserve them, but "biscuits after dogs" one sounds more like "throwing good money after bad." That is, after something starts going unrecoverably wrong, don't spend more resources trying to fix it.

[not a teacher]