If you’ve had it with sharing your living quarters with roaches or ants, give them the heave-ho by sprinkling boric acid along any cracks or crevices where you’ve spotted the intruders. Use a baster to blow small amounts of the powder into hard-to-reach corners and any deep voids you come across. Note: Keep in mind that boric acid can be toxic if ingested by young children or pets. See more uses for Basters.
Next: How to get rid of ants coming in from outside with chalk.