Mold kits don’t work. Mold needs food and water to grow.
The home kits start out with food and water, but then they sit on store shelves, hot loading docs, warehouse inventory with no expiration dates. You get the idea.
And those kits usually require you to pay an extra fee to send the Petri dish to an environmental lab.
Even after paying a lab you still don’t know if you have a mold problem. You need to compare the outside airborne level of spores with inside airborne spore levels.
And some spores fall faster than others.