Sewer Connection Rat Barrier McAlpine ARB1 – anti-rodent guard for drainage pipe inlets

McAlpine ARB1 is an anti-rodent guard designed to be fitted into sewer and drainage pipe inlets where connection points are vulnerable to pest entry. The device allows normal wastewater flow while preventing rats and other small animals from moving from external drains into internal plumbing and service access points. It is suitable for both domestic and light commercial drainage systems and is intended to reduce infestation risk and protect sanitary installations.

Advantages

The anti-rodent barrier features a compact, in-line design that does not obstruct routine wastewater flow, preserving drainage performance. Constructed from corrosion-resistant materials, it withstands the humid and chemically variable conditions typical of sewer environments. The guard is passive and requires no power or mechanical parts, which simplifies long-term maintenance and reduces the need for frequent servicing.

Suitable for

• Protection of household drainage connections and soil stacks
• Use at junctions and service access points in commercial drainage systems
• Installation in basements, utility rooms and external drain connections
• Retrofitting existing pipe inlets to reduce rodent ingress

Key specifications

• Inline guard for installation inside drainage pipe inlets
• Permits normal wastewater flow while blocking small pests
• Corrosion-resistant construction suitable for wet environments
• Compact form factor for fitting at junctions and access points
• Passive design with no electrical components or moving parts

How to use

Install the anti-rodent guard at the inlet or junction where an external drain connects to the internal plumbing, following the orientation indicated by the product so that wastewater can pass through unimpeded. For retrofit installations, access the connection point, ensure the pipe interior is clean and free of large debris, then insert the guard and secure it according to the pipe diameter and fitting type. After installation, run water to confirm normal drainage and check that the guard is seated correctly.

Usage recommendations

Inspect the guard periodically during routine drainage maintenance and after significant weather events. Remove accumulated debris or sediment that could impair flow. If persistent blockage or damage is observed, replace the unit. For best results, combine the guard with good site hygiene and regular drain inspections to reduce the likelihood of rodent ingress.