Just let them set up home inside your house for a natural pesticide
Toxicity and aggression
In general, huntsman spiders are not regarded as dangerous, and can be considered beneficial because they feed on insects (cockroaches are a favourite). Many Australians will relocate huntsman spiders to the garden rather than kill them. There have been reports of members of the genus Neosparassus (formerly called Olios) giving bites that have caused prolonged pain, inflammation, headache, vomiting and irregular pulse rate; however, a scientific study into the bite of these spiders did not note any severe or unusual symptoms resulting from confirmed Neosparassus bites.[4] It is unclear under what circumstances these spiders bite people, but it is known that female members of this family will aggressively defend against perceived threats to their egg sacs and their young. The bite usually does not require hospital treatment.
(Wikipedia: Huntsman Spider)
