Trap and kill the most humane way to kill a squirrel is to trap it with a baited live cage trap and then euthanize it using a co2 chamber or injection.
How to kill squirrels in my attic.
To get rid of squirrels in the attic try soaking a rag in ammonia and placing it in your attic which may force the squirrels to leave because of the strong smell.
However beware they are difficult to set.
If you absolutely must kill squirrels instead of poiosn use one of many lethal traps available in home and garden stores everywhere.
Unfortunately no squirrel poison is being sold in the market as it is illegal to kill squirrel.
Many pest professionals are trained to trap and remove wildlife in attics and crawlspaces.
The animal dies quickly without suffering much.
If you trap one squirrel another may take its place in your attic.
You can also set up bright lights in your attic since squirrels prefer to nest in places that are dark.
The most common way to get rid of squirrels is by poisoning them.
The traps are made to be enticing effective and fast in trapping and killing a squirrel that may have made a home inside your property.
Reliable the only other solution to an attic squirrel infestation is to set up a series of fairly complex traps and wait for the squirrels to leave.
A baited trap can leave the smell of food in an attic and attract additional squirrels or other small wildlife.