Although Boric Acid is an item that is typically stored in bulk by rural survivalists (and ignored by those in the cities), having some on hand in suburban environments is recommended (although is a lower priority). Fortunately Boric Acid is very inexpensive and has an indefinite shelf-life.
Boric Acid is typically used to control roaches, termites, ants, silverfish, bedbugs and fleas: If an emergency continues for over six months, insect control will be very important. Boric Acid is easy to use, as it is just sprinkled under (or behind) cabinets, in attics, or under base boards. It is simply used as a ‘barrier’ that the insects will have to cross. For fleas, it typically is powdered into the carpets, bed linen or pet areas.
A homemade ant and roach bait can be made by dissolving 1 teaspoon boric acid powder and 10 teaspoons sugar into 2 cups of water. Dip cotton balls into the liquid to absorb as much water as possible, and leave the homemade bait where ants or roaches (but not humans or pets) may find them. Although not as effective as commercially made baits, if no other bait can be found this can be made cheaply and with items typically stored in survivalism based home.
Technically Boric Acid is a poison, and should never be inhaled or taken internally; however it takes considerable amounts to cause death in adult humans. The dry powder is abrasive to the insects’ exoskeleton, and if the insect ingests the poison, it affects their metabolism. There may be long term effects on humans that have as of yet gone undiscovered.
There are other uses for Boric Acid that will be less useful for the Suburban Survivalist, but make it a commodity that may be traded in a long term disaster: It is a mild acid, an antiseptic, flame retardant, can be used for minor burns when mixed as a salve, can be used as a eye wash, treat vaginal yeast and fungal infections, a preventative for athlete’s foot, can be used to treat certain types of ear infections (in humans and animals), and can be used in curing cattle and sheep skins.