Hi folks. I'm in Sydney and have been making compost in one of those square
based black plastic compost bins for a couple of years now. In the last two
months have found I have redbacks in all 4 corners and hiding in the handle
of the lid. This isn't the best as my two compost helpers are children and
I'd hate for them to get bitten!

First I tried squashing the spiders, must have missed some. A month later
there are more than ever. Then I tried a very light spray of baygon right
on the spider (don't want to kill all the "good" bugs!). Now they're back
and I'm running out of ideas.

Help?

Thanks!