Natural Spider Killer/Preventer: Take one cup of vingar, one cup of pepper powder, a teaspoon of oil and liquid soap. put it into a spray bottle and spay along the outside of your door(outside door) and along windows refresh after it rains.
If I do this with red and yellow glass stones, it would look like a fire! DIY Mason Jar Crafts - This Mason Jar DIY Prism Light is made from dollar store glass stones. Cool DIY Projects for The Home Ideas
DIY: Nontoxic Method to Kill Ants. Sprinkle cornstarch on the ants, and their path. Wait Spray with water (it works to create a "cement" with the cornstarch) . Within a day or two, the ants will be dead.