Organic Ant and Spider Control for New Hampshire Homes

Why Sprays and Gadgets Fail

Chemical sprays and ultrasonic devices offer temporary relief at best. Ants and spiders quickly recolonize, and broad‑spectrum insecticides kill beneficial predators.

Organic Strategy

The author recommends the comprehensive resource at Ghorganics.com (click “Critter Controls” → “Insects”). Key principles:

• Exclusion: Seal cracks, gaps, and entry points with caulk, weatherstripping, and fine mesh screens.
• Sanitation: Eliminate food crumbs, grease, standing water; store food in sealed containers.
• Natural repellents: Diatomaceous earth in wall voids, boric acid baits for ants, essential oil sprays (peppermint, citrus) for spiders.
• Habitat modification: Reduce clutter, trim vegetation away from foundation, manage outdoor lighting (yellow bulbs attract fewer insects).
• Beneficials: Encourage spiders (they eat ants) and ground beetles outdoors.

Indoor Herbal Barrier

The author places fresh rosemary sprigs on cabinet shelves, under appliances, and at entry points—replaced monthly—to deter cockroaches and ants without chemicals.