querying local mosque about zakat?

is it a good idea or are we legally bound to ask local mosques where the money of zakat goes to?

i mean i am wondering that the money we put in that zakat box goes too? (since there are three boxes…zakat, sadqa, and mosque donations). so needy of which part of the world actually get support from this zakat money?

or should i just keep donating this money, without querying about my haq-halal.