Is it possible to get the spores into your house? And, if so, can they survive? Can they do anything to humans or pets?
Certified GKH Gardening Expert
Artillery fungus can only grow on wood outdoors, so it wont grow inside your house. The spores will stick to artificial siding and other materials and leave a stain, but they won't survive there. It is also not harmful to humans or pets.
Here are some questions and answers about artillery fungus: