Determining the best exclusion method for your bat issue depends on several factors, including the size of the infestation, the structure of your home, and the legal considerations for bat removal in your area. Here’s how to assess which exclusion approach is best suited for your situation.
1. Assessing the Infestation Size
- Small Infestation (1-5 Bats) – If you’ve spotted just a few bats, a one-way exclusion device may be the best option. This allows bats to exit but prevents re-entry without extensive sealing work.
- Medium Infestation (5-50 Bats) – A larger colony may require multiple exclusion points and a combination of one-way devices and structural sealing.
- Large Infestation (50+ Bats) – If a significant colony has settled in your home, professional exclusion services are strongly recommended. Attempting DIY exclusion at this scale may lead to trapped bats and compliance issues with wildlife protection laws.
2. Identifying Entry Points
- Single Entry Point – A one-way exclusion device can typically be installed at the primary entrance while other small gaps are sealed.
- Multiple Entry Points – A professional assessment may be required to ensure all access points are located and properly sealed after exclusion.
- Difficult-to-Access Entry Points – If bats are entering through vents, high roof gaps, or damaged siding, a more extensive exclusion process may be needed.
3. Choosing an Exclusion Device
- Bat Cones – Best for small gaps where a single exit route can be installed.
- Netting or Tubes – Effective for larger openings or multiple exit points, ensuring all bats have a clear path out.
- Sealing Materials – Mesh, caulk, and flashing are necessary to close off access points once exclusion devices are removed.
4. Considering Legal and Ethical Factors
- Breeding Season Considerations – Exclusion should not be performed during maternity season (typically spring to mid-summer) when young bats are unable to fly.
- Protected Bat Species – Some bats are legally protected, requiring special handling and timing for exclusion efforts.
- Compliance with Local Laws – Hiring a professional ensures that all exclusion methods follow state and federal regulations.
5. Determining When Professional Help is Needed
- If bats are inside living spaces rather than just attics or walls.
- If structural repairs are needed post-exclusion.
- If exclusion requires climbing to high or unsafe areas.
- If legal restrictions on bat removal apply in your area.
Final Thoughts
Selecting the right exclusion method is key to ensuring bats are removed safely and effectively. By assessing the scale of the infestation, the number and type of entry points, and legal considerations, you can determine whether a DIY exclusion is possible or if professional services are required. Proper planning and execution will prevent future infestations and ensure humane removal.