I do not believe mothballs got into the walls maybe a few but not many.
Mothballs in attic odor.
My guess is that the moth ball vapors are heavy and sinking into the house.
Naphthalene mothballs can take many months for the odor to go away while p dcb usually evaporates away within a month.
Put out a bowl of vinegar or coffee grounds to help absorb the odor.
Once your mothballs have dissolved they ll usually leave a very annoying odor especially if you use them in an indoor area like your basement your attic or the inside of a shed.
Well here is the weird thing the smell is almost completely gone from the attic but the house reeks so bad that we can t stay there.
A relatively common mistake is placing mothballs in an attic to repel squirrels.
Indeed the odor from mothballs is a voc like substance paradichlorobenzene or naphthalene that quite penetrates many materials including even drywall furnishings carpeting and it can take quite a while for it to diminish.
This can become quite troublesome.
This will almost always result in a persistent and noxious odor throughout the home alternative ways to control clothes moths are available for those who prefer not to use chemical treatments.
The problem is that mothballs are themselves rather unpleasant smelling and tend to leave that odor behind long after the balls themselves dissolve.
Charcoal will soak up odors as well and help remove the moth ball smell.