What happens if you leave your door open in Australia

"Good, good."
- Funnel-webs

I remember this quote well,
"No one knows, incidentally, why Australia's spiders are so extravagantly toxic; capturing small insects and injecting them with enough poison to drop a horse would appear to be the most literal case of overkill. Still, it does mean that everyone gives them lots of space.”
― Bill Bryson, In a Sunburned Country

I feel like the funnelwebs are gonna have more issues with the kangaroos than I'll have with them