Bats are an ecologically & economically valuable group of species and are protected from harm
by the WA Wildlife Act.
Bats can only be evicted in the appropriate season in a safe and sensitive manner.
2) Assess the situation
Where are bats roosting? The figure at right shows
all the places bats could enter into or use in a house.
Is this a night roost? Night roosts are places that bats use ￼￼￼￼￼￼￼￼￼￼￼￼￼￼￼￼temporarily during the night to rest between feeding bouts and include covered patios, door ways, and carports. Bats are rarely seen but droppings are observed in the morning.
Is bat eviction necessary? There’s no reason to evict them if there is little chance for contact with people.
3) Protect human living space
Prevent guano and bats entering inside the human living quarters by sealing spaces in floor joists and other entry points between roost and human living spaces.
4) Identify entry and exit points
Look for telltale signs of bat entry. These could include brown stains on walls where they squeeze in or accumulated guano below the entry point.
5) Install a bat house prior to eviction
Providing alternate roosting habitat increases the chances of successful and safe eviction of bats.
Install bat houses as high as possible (at least 3 1/2m (12’) high), on south facing exposures to receive at least 6 to 10 hours of sun. Bat houses should be installed in an uncluttered location without branches, buildings, or poles in front or below it.
Use only large, multi-chambered designs like a four-chamber nursery box or a two-chamber rocket box.