Naphthalene is a toxic gas heavier than air and when used in your attic the gas not only infiltrates the space but can also seep into the lower levels of your home and living areas.
Are mothballs dangerous in the attic.
Putting moth balls in the attic.
If you are considering using moth balls to get rid of squirrels in the attic then you need to read this moth balls are toxic to humans and pets.
The dangerous myth of mothballs.
Most moth balls are made from naphthalene which is derived from coal tar.
Generally speaking moth balls are made out of naphthalene which is a material derived from coal tar.
Besides the ease of just throwing a 1 2 box out in the garage or up in the attic and letting the smell chase away their troubles is so much more simple than breaking out the spray.