Calculator Inputs
Formula Used
The calculator converts inputs to meters internally, then applies spacing rules. Spacing starts from a base value by pest and risk, then tightens for site condition and entry points.
| Step | Computation | Notes |
|---|---|---|
| 1) Base spacing | base = lookup(pest, risk) | Higher risk uses smaller spacing. |
| 2) Adjust spacing | spacing = base × terrainFactor × entryFactor | Entry factor reduces spacing up to 15%. |
| 3) Perimeter stations | Nₚ = ceil(perimeter / spacing) | Round up to avoid gaps. |
| 4) Interior stations | Nᵢ = ceil(interior / (spacing×0.65)) × floors | Interior runs tighter spacing than outside. |
| 5) Bait load | totalBait = (Nₚ + Nᵢ) × baitPerStation | Add 10% contingency for hot spots. |
Guardrails keep spacing within practical limits for planning.
How to Use This Calculator
- Measure your site perimeter, then estimate interior coverage length.
- Select pest, risk, and site condition to match field observations.
- Enter entry points to tighten spacing around likely access zones.
- Choose station and bait form, then calculate your plan.
- Download CSV or PDF for crews, audits, and service logs.
Field inputs that drive station density
Perimeter length and interior linear coverage set the baseline workload for a baiting plan. This calculator treats them as continuous runs and converts entries to one internal unit before spacing is applied. A longer perimeter increases station count predictably, while interior coverage can scale faster when multiple floors are selected. Entry points add pressure, because doors, penetrations, loading docks, and temporary openings become repeat access routes during a build.
Risk level and condition adjustments
Risk selection shifts spacing from conservative to aggressive placement. Higher risk tightens station intervals, improving interception where activity is expected. Site condition further adjusts spacing: open zones allow wider intervals, while cluttered storage areas and covered runs justify tighter placement. The entry-point adjustment reduces spacing up to 15%, reflecting that many access routes increase monitoring demand.
Perimeter and interior station planning
Perimeter stations are calculated as ceil(perimeter ÷ spacing) so the plan avoids gaps at the end of a run. Interior stations use a tighter interval (65% of perimeter spacing) to reflect confined travel lines near walls, corridors, and mechanical rooms. When floors are added, interior stations are multiplied to provide repeatable coverage per level for consistent mapping.
Bait load, station type, and practical caps
Bait per station is auto-selected by target pest and bait form, then capped by station type so the load stays practical for the container. An override option supports vendor-specific products while still enforcing caps. The report also adds a 10% contingency for hotspots, such as dumpsters, break areas, and material staging zones.
Service interval, documentation, and handoff
Service timing is suggested at 7, 14, or 30 days based on risk, aligning effort with expected pressure and compliance checks. Use the CSV to assign station IDs, note landmarks, and track re-baiting amounts per visit. The PDF supports toolbox talks and subcontractor handoff as the layout changes. If bait is depleted between visits, tighten spacing or shorten service timing to keep stations active, traceable, and compliant onsite.
FAQs
1) Do I need both perimeter and interior values?
No. Enter perimeter for boundary protection, interior coverage for corridors and wall runs. Use both when you want continuous monitoring inside and outside, especially for multi-floor shells and active renovations.
2) How should I choose the risk level?
Use low for clean, controlled sites with limited attractants. Use medium for typical builds with storage and waste. Use high when activity signs exist, nearby infestations are known, or food waste and clutter are frequent.
3) Why do entry points tighten spacing?
More entry points create more travel options and increase inspection workload. Tightening spacing helps intercept movement near doors, penetrations, and docks, and improves the chance that each access route is monitored.
4) What does the bait override do?
Override lets you set grams per station for a specific product. The calculator still applies station-type caps to keep loads practical. Use override when your label rate differs from the default planning values.
5) What if stations get moved during construction?
Update the plan and re-label stations with the new location reference. Keep the same spacing logic, then add extra stations near new gaps, storage zones, and dumpsters. Re-export the CSV/PDF for the crew.
6) Is this output a compliance document?
It is a planning report, not a legal certification. Always follow local regulations, site policy, and product labels. Use the exports to support documentation, audits, and consistent servicing records.
Example Data Table
Sample scenarios to illustrate typical outputs.
| Scenario | Perimeter | Interior | Pest | Risk | Stations | Total Bait | Service |
|---|---|---|---|---|---|---|---|
| Warehouse shell | 180 m | 80 m | Rats | High | 36 | 7,200 g | 7 days |
| Renovation floor | 260 ft | 220 ft | Mice | Medium | 66 | 3,300 g | 14 days |
| Open yard | 120 m | 0 m | Rats | Low | 8 | 1,600 g | 30 days |