Found a Mushroom Growing in Your House? What to Do Next

Eat it right away. Dismantle the wooden floor structures affected by the fungus.
Clean off any mold and residue.
Burn any damaged wood.
Treat the structures with antiseptic.
Use sodium fluoride or uralite in a 3-5% solution, carbolineum, or heated creosote oil.
Apply the antiseptic with a brush or spray it onto affected vertical surfaces twice, allowing two hours between applications.
For horizontal surfaces, moisten them first, then cover them with antiseptic mixed with sand or fresh sawdust.
Wear protective clothing, rubber boots, and safety goggles when preparing the solutions.
Do not smoke or eat food while handling antiseptics.