Everything will be very well hidden. For instance the bags could be inside air vents or under floorboards or inserted into the walls (and would be separate from the other supplies). But as a house-hunting witch we think Ari would be an excellent candidate to find a bag and the random number generator agreed!
She could be free to find such anytime on the next IC day or after. Even if they are asked to remove that stuff they will try to leave as much around as possible, and if someone who can sense things goes through removing it so it's REALLY gone, we'll let you know!