Ants in a machine are a facility issue and has nothing to do with the company. And all products are wrapped so there's no way of getting poison on anything, especially when it was ant traps that were used in the machine. Keyword "traps", the ants get stuck once they go inside.
Found ants inside of a payday. Answer to the problem was to put insect poison inside of the vending machine with food in it. Ants walk in and out of the poison and onto contents of the vending machine.