If usually keep most boxes until I am satisfied it works okay, etc. If it is a good sturdy box, I will use it to store other stuff in, otherwise I will cut off the panels that have sale or shipping info on them (like Amazon, Walmart) or special info about the machine and toss (recycle the rest). Otherwise we would need another house just for boxes and has been said, they can become a fire hazard. :-)
Marysewfun