The 'House Arrest' In-House Sparrow Trap | Troyer's Universal Nest Box Sparrow Capture System

The Experience

The most effective sparrow management happens where sparrows feel safest — inside the nest box they've already claimed. The House Arrest is a universal in-house sparrow trap that mounts directly inside any nest box with a flat wooden front and an oval, slot, or round entrance, placing a passive live capture system precisely where House Sparrows are most vulnerable — at the nest they're actively defending. A 3-inch tripper wire set in the capture position waits silently until a sparrow enters and triggers the mechanism, securing the bird without bait, without external setup, and without alerting the rest of the colony. Compatible with front, back, and side opening nest boxes across a wide range of entrance configurations, The House Arrest is the in-house counterpart to an external bait trap — covering the capture scenario that external traps can't reach. Mounting template, instructions, and screws included.

Scientific Engineering

• In-House Passive Capture: Unlike external bait traps that require open placement and active baiting, The House Arrest operates from inside the nest box itself — placing the capture mechanism at the precise location where a territorial House Sparrow is most likely to be present and least likely to be on alert.
• 3" Tripper Wire Mechanism: A tripper wire extending 3 inches back in the set position captures sparrows upon entry without requiring bait, visual attractants, or landlord presence — a fully passive system that works continuously once installed and set.
• Universal Nest Box Compatibility: Designed for any nest box with a flat wooden front and oval, slot, or round entrance openings — compatible with front, back, and side opening configurations across the full range of standard cavity nesting box designs.
• Slot Opening Compatibility: Compatible with slot openings up to 3.5" wide. Slot openings wider than 3.5" may require modification for optimal functionality.
• Steel and Plastic Construction: Durable steel and plastic construction withstands repeated use across variable outdoor conditions and multiple trapping seasons without degradation of the capture mechanism.
• Included Mounting Template: A mounting template with instructions and screws simplifies installation and ensures correct placement within the nest box for reliable capture performance.

Boutique & Conservation Values

• In-House Advantage: External traps capture sparrows attracted to bait in open areas. The House Arrest captures sparrows inside the territory they're actively defending — the scenario where capture rates are highest and colony disruption is lowest.
• Complementary Colony Protection System: Used alongside an external bait trap like The Jailbird, The House Arrest provides comprehensive House Sparrow management coverage — external attraction and capture combined with passive in-house interception for a complete invasive species control program.
• Humane Live Capture: The House Arrest captures birds alive and unharmed, giving the landlord full control over disposition. Check the trap regularly during active trapping periods to ensure any captured bird is promptly and humanely addressed — responsible colony management demands the same attentiveness inside the nest box as it does at the colony site.
• ⚠️ Important: Always verify the species of any captured bird before taking action. It is illegal to trap, harm, or relocate native North American bird species. The House Arrest is intended exclusively for the management of non-native invasive species such as the House Sparrow (Passer domesticus).
• Heritage Manufacturing: Proudly Made in the USA.

Specifications

• Set Dimensions: 3"D x 3"W x 5.5"H
• Compatible Entrance Types: Oval, slot, round
• Compatible Box Types: Flat wooden front, front/back/side opening
• Slot Opening Limit: Maximum 3.5" wide
• Material: Steel, Plastic
• Mounting: Installs inside nest box (nest box not included)
• Includes: Trap, mounting template, instructions, screws
• Shipping Weight: 1 lb.
• Country of Origin: Proudly Made in the USA