If you have indoor spiders you should
just spray the perimeters and openings,
in and under and behind all around
everything you use personally, door
jams, window frames, cupboards,
cracks, holes, ceiling, walls....
all with home and garden supplies from
the store. Let me tell you why. They
will respect your perimeter by instinct
and their senses, warn the colony,
and the reason is because there must
also be centipedes, and other basement
and crevis dwellers. The remainder of
the bugs will kill each other trying to survive.
Dont put edible poisons out for rats or mice.
If you have cockroaches or anything worse just
Repeat the process a couple times and make
sure you are not missing anything.