Exclusion and Sealing
Preventing pest entry by sealing cracks, gaps, and openings in building structures using durable materials.
Detailed Overview
Exclusion is the practice of physically blocking pest access to buildings and harborage areas. This includes sealing cracks and crevices with caulk or sealant, installing door sweeps, screening vents, using escutcheon plates around pipe penetrations, and filling larger gaps with copper mesh or hardware cloth before sealing. Adult cockroaches can fit through a crack 1/16 inch wide, and mice can squeeze under a door gap of 1/4 inch. Proper exclusion uses durable, pest-resistant materials and addresses all potential entry points. Sealing should be the first line of defense in any IPM program.
When to Use
Essential during renovations and unit turnovers. Should be ongoing as part of building maintenance to address new cracks, gaps, or damage. Prioritize sealing around pipes, doors, windows, foundation, and utility penetrations.
Required Skill Level
Requires some training and experience in pest management
Benefits
- Prevents pest entry long-term
- Non-chemical prevention
- Addresses root cause of infestations
- Improves energy efficiency
- Reduces maintenance costs over time
- One-time investment with lasting results
Limitations
- Requires initial investment in materials and labor
- May need building-wide coordination
- Materials can deteriorate over time
- Cannot eliminate existing interior infestations
- May be difficult in older buildings
Related Concepts
Other techniques that may be useful
Crack and Crevice Treatment
Pesticide application method that places insecticides directly into cracks, crevices, and voids where pests hide, minimizing exposure to people and pets.
HEPA Vacuuming
Non-chemical pest removal using High Efficiency Particulate Air (HEPA) vacuum cleaners to physically remove pests, eggs, droppings, and allergens.
Steam Cleaning
Non-chemical pest control using high-temperature steam to kill pests, eggs, and larvae on contact.