Note air bricks, basement openings, service entries and repeated movement from ground level. Avoid attributing activity seen in the street to the home.
Maze Hill · compare three viewpoints
Triangulate the pest route before choosing control.
Evidence at the front, rear and inside the property may describe one route or three unrelated events. We compare the viewpoints and act only on the connection the inspection can support.
- Front and rear observations kept distinct
- Indoor evidence dated and positioned
- Route theory tested before proofing
The observation triangle
Give each point its own evidence note.
Maze Hill enquiries can involve period houses, flats, gardens, basements and rooflines. Their relevance comes from a dated sign and credible access, not from the property description alone.
- Point A: frontage and public-facing edge
- Point B: rear garden, yard or outbuilding
- Point C: the precise interior room
Record burrows, runs, sheds, waste and vegetation in relation to the building. Do not disturb holes or clear the only tracks before inspection.
Photograph droppings, gnawing, textile damage or a specimen, and identify the room, floor and latest date.
Connection test
What would make two points part of the same route?
Coincidence in time helps, but physical compatibility matters more. The technician weighs direction, species, freshness and a usable opening.
TestSupporting signReason for caution
Direction
Runs or marks lead between pointsNearby evidence may face elsewhere
Identity
Signs fit the same speciesNoise and damage alone can be ambiguous
Timing
Fresh evidence appears togetherOld droppings can distort the sequence
Opening
Route is usable and activeA visible crack may be irrelevant
Three possible conclusions
The triangle does not always close.
A responsible inspection can separate findings rather than forcing them into one convenient explanation.
External route reaches an occupied room
Fresh rodent evidence, matching direction and a usable opening can support coordinated control and later proofing across both points.
Sequence control and repairGarden activity has no indoor match
An outside sighting can remain an external matter when no internal sign or credible entry exists. Indoor treatment is not added as a precaution.
Keep scopes distinctOne point cannot be inspected safely
A locked basement, inaccessible roof or concealed void is recorded as a limit. Monitoring or arranged access may be the correct next step.
Do not replace access with certaintyServices for different triangle outcomes
Control the confirmed activity, survey the uncertain route.
Selection depends on species and where the supporting evidence sits.
Repair the opening the pest uses, not every visible imperfection.
Proofing recommendations identify position, material and reason. They must preserve necessary ventilation and drainage and should not trap an animal inside. An active rodent route is normally controlled and monitored before final closure.
Roof and upper-level openings require a safe view. A photograph from ground level can guide planning, but it cannot always confirm occupation or installation requirements. Fragile roofs and unboarded lofts are declared before work.
Shared fabric needs authorisation. A resident can report evidence inside a flat but may not control a basement, roof void or exterior managed by a freeholder. Findings are separated from areas that remain inaccessible.
When no connection is proved, each point receives its own action. Outside food pressure might be corrected while an unrelated textile insect indoors receives identification and treatment.
Prepare the triangle
Make each observation point reachable without disturbing it.
Provide the full postcode, best entrance, floor and keys for relevant garden gates, basements, stores or lofts. Mention parking restrictions, pets and unsafe height.
Front
Photograph the whole elevation and mark the suspected opening from ground level.
Rear
Leave runs and burrows intact, secure pets and identify outbuilding keys.
Inside
Keep fresh evidence visible where safe and avoid sealing gaps before assessment.
Maze Hill inspection guidance.
Does a rat seen behind the garden mean it entered the house?+
No. Indoor evidence and a credible usable route are needed before the garden sighting is linked to the building. External and internal scopes can remain separate.
What should I photograph at the front of the property?+
From ground level, include the wider elevation and the suspected opening. Close pictures without context can make position and direction difficult to understand.
Can old droppings be used to connect two areas?+
They provide history, but freshness and matching later evidence matter. Old signs can create a false sequence if their date and species are uncertain.
When is monitoring better than immediate treatment?+
When identification, current activity or the connection between points remains unclear. Monitoring should answer a specific question and be checked at an agreed time.
Can proofing be completed before rodent control?+
Only when the route and circumstances support that sequence. Closing an active opening too soon can trap or divert movement, so final proofing often follows control and review.
Plot three points
What appeared at the front, rear and inside?
Give each sign a date and exact position. We will test whether they form one route or need separate actions.