This could not be more dreadful, bless you for trying to save others from this by sharing. I will never have one now, I have bought many for gifts over the years the years but they were for one family with no pets. I sure didn't know there was anti freeze in them either. We are so sorry for your loss and grief. Take guilt off the menu please, you had no idea. Again, sending deepest sympathy at this heartbreaking time, our hearts go out to you and wishing you love and support. Pet talkers are always here to talk to when you need us!