Pest Inspection Frequency Calculator
Determine the recommended pest inspection frequency for your property based on property type, climate risk zone, pest history, and surrounding environment.
Formula
Adjusted Interval (months) =
(Base Interval × Climate Multiplier) + History Adjustment + Surroundings Adjustment + Age Adjustment + Timber Adjustment + Food Adjustment
Result is clamped between 1 month (minimum) and 24 months (maximum).
| Factor | Values |
|---|---|
| Base Interval | House/Apartment/Warehouse: 12 mo | Commercial: 6 mo | Restaurant/Healthcare: 3 mo |
| Climate Multiplier | Low: ×1.00 | Moderate: ×0.85 | High: ×0.70 | Very High: ×0.55 |
| Pest History | None: 0 | Minor: −1 mo | Moderate: −2 mo | Severe: −4 mo |
| Surroundings | Urban: 0 | Suburban: −0.5 mo | Rural: −1 mo | Bushland/Waterway: −2 mo |
| Building Age | <15 yrs: 0 | 15–30 yrs: −1 mo | >30 yrs: −2 mo |
| Timber Construction | Yes: −1.5 mo | No: 0 |
| Food Storage/Prep | Yes: −1 mo | No: 0 |
Assumptions & References
- Base intervals are derived from Australian Standard AS 3660.2 (Termite Management) and general pest management industry guidelines.
- Restaurants and healthcare facilities follow more frequent schedules due to regulatory requirements (e.g., Food Standards Australia New Zealand — FSANZ).
- Climate multipliers reflect the increased pest activity in warmer, more humid environments, consistent with CSIRO climate zone classifications.
- Timber construction adjustments account for elevated termite risk as recommended by the Australian Timber Preservation Council.
- Building age adjustments reflect increased structural vulnerability and entry points in older buildings.
- This calculator provides a general recommendation only. Always consult a licensed pest control professional for a site-specific assessment.
- Minimum recommended interval is 1 month (for very high-risk commercial/food service properties); maximum is 24 months for low-risk residential properties.
- Inspections per year = 12 ÷ Adjusted Interval (months).