My chickens ate a cube of mouse poisoning (not a warfarin base, so Vit K wouldn't help) I was told by the chemical co. that there wasn't much to do but wait and see, but it is supposed to not kill secondary animals, such as cats that eat the poisoned mouse. Anyway, that was last Summer and they are all just fine! Whew! Now I only put the poison in those feeder things and have it weighted down with a heavy brick. Hoping yours will be just fine too! If they are ok today, I would guess they made it!