Surely, the charitable men and women, have loaned GOD a loan of goodness. They will receive their reward multiplied manifold; they have deserved a generous recompense. (Quran 57:18)
The Tucson Food Bank has been providing meals to the Tucson community (and surrounding areas) since 1976. They distribute over 65,000 meals a day and serve 190,000 people annually (source: community food bank). Each $1 donated allows the food bank to feed 4 people (source: community food bank).
O you who believe, you shall give to charity from the good things you earn and from what we have produced for you from the earth. Do not pick out the bad therein to give away, when you yourselves do not accept it unless your eyes are closed. You should know that God is Rich, Praiseworthy. (2:267)
They donate their favorite food to the poor, the orphan, and the captive. "We feed you for the sake of GOD; we expect no reward from you, nor thanks. (76:8-9)
Any charity you give, or a charitable pledge you fulfill, GOD is fully aware thereof. As for the wicked, they will have no helpers.
If you declare your charities, they are still good. But if you keep them anonymous, and give them to the poor, it is better for you, and remits more of your sins. GOD is fully Cognizant of everything you do. You are not responsible for guiding anyone. GOD is the only one who guides whoever chooses (to be guided). Any charity you give is for your own good. Any charity you give shall be for the sake of GOD. Any charity you give will be repaid to you, without the least injustice. (2:270-272)