Schrodinger's symbiote

You hear a knock on your door and look up from what you are doing, wondering who's knocking on your door at this time of day. Walking to the door, you look through the peep-hole to see if anybody is there. Not seeing anyone, you walk over to a window that gives you a view of your front door and peek out the window to see if someone is hiding or what not.
Inspecting the area outside your front door, you see a plain box sitting on your welcome mat. Mentally tallying your expected mail and recalling absolutely nothing about receiving any kind of box, you leave the window and return to the door. Opening the door, you peer back and forth to see if someone is waiting around a corner or if this is some sort of strange prank. Finding everything to be quiet and not a peep of a peeper, you look down at the box.
On the top of the box, emblazoned in bright neon red letters is:
"Schrodinger's Symbiote!"
In smaller black letters beneath the apparent title is another statement:
"Brought to you by ACME's newest division! Window to the Cosmos."
In even smaller yellow letters beneath that:
"The Curiosity Collection"
The box sits on your doorstep, seemingly harmless, as it waits for you.