It's hard to kill spiders because they don't lick their bodies like ants and other insects so they don't absorb insecticides.
But they won't walk over sharp things.
I have been successful finally after trying many things. The secret is Epsom salts! It has sharp crystals!
Just pour it on windowsills and doors, inside and out. Rain will wash it away, just reapply.
It's CHEAP, comes in a milk type carton, easy to use, and it WORKS !!!
I have a friend who sprays Pam (water would dissolve the crystals) and then pours the Epsom salts all the way around her doors and windows, also, some on the carpet to her bedroom.

Sew together 2 pieces of foam sponge, about 6" square, leaving a small opening along one side, and pop in all the small leftover bits of soap. It makes an excellent sponge for kiddies bath time.

To clean and freshen the microwave, in a bowl mix ¼ cup of white vinegar and 1 cup of water and heat for 5 minutes, this will remove odors and soften baked on food spills.

Cover the area with a little white glue. Let it dry, then peel off the glue and the splinter. This works for cactus needles, too.