Both spikes and loose nets can be installed over nest sites to prevent the bird from returning, but nets are not a humane option since birds and other wildlife can get tangled in them. 

Spikes are a humane alternative that deter nesting without harming the birds. In small areas, like vents, a very fine mesh net can be installed to prevent the bird from returning. These nets don't generally pose a risk to the birds.

Some animals, such as bats or birds, will be able to get out of chimneys on their own since they can fly. Other animals, however, may have a harder time and will require the help of a professional to escape. Squirrels and raccoons in particular may become stuck inside a chimney, especially if you have a buildup of soot or creosote inside. This can prevent them from being able to climb out, in which case you’ll need to call an animal control expert to help remove them.

Yes, it is generally safe to return to your house once the pest control professionals have granted permission. Keep in mind that you’ll only need to evacuate your home during extreme pest control treatments, such as whole-home fumigation, while more minor treatments don’t require leaving. When you return home, be sure to follow the pest pro’s instructions carefully, especially those surrounding wait times and safety precautions.

Set live traps or install a one-way door to evict squirrels, rodents, and other animals from your attic. Once they’re out, seal any entry points to prevent the animals from returning. If you’re dealing with an infestation, call a pro.