Ashley Jiron, who runs P.B. Jams in Oklahoma, said she would not take the notice down until the person comes in for a proper meal.
Pictures of the sign have spread on Reddit and Instagram, drawing support for the show of compassion from around the world.

It reads: “To the person going through our trash for the next meal, you’re a human being and worth far more than a meal from a dumpster.
“Please come in during operating hours for a classic Pb&j, fresh veggies and a cup of water at no charge.
“No questions asked. Your friend, the owner.”
“Last week, I had noticed some bags, when I had taken out the trash, were torn open and some of the food was taken out,” she told the KFOR news channel.
“That really, it hurt me that someone had to do that.”
She said she realised pride may stop the person coming inside but that she had to try.

Ms Jiron added: “I think we’ve all been in that position where we needed someone’s help and we just needed someone to extend that hand and if I can be that one person to extend that hand to another human being then I will definitely do it.”