Here is a safe, non-toxic way to kill them off....
Diatomaceous Earth is a non-toxic way to rid your home of pests. This substance is safe for your pets, as it comes from tiny, fossilized organisms called Diatoms. Their skeletons are made of Silica.
This substance causes the bugs to dry up and expire. It works on all sorts of bugs, from spiders to bed bugs. Just sprinkle the floor with it, or wherever the pests are lurking. It does take a few days for the bugs to die off, but better than walking through spray bug killers, which may contain nerve destroying chemicals. Better for you, Better for your pets!