Enter garden and yard conditions
This tool estimates relative risk, not a diagnosis. If you suspect active termites, get a qualified inspection.
Example data table
| Scenario | Climate | Soil moisture | Mulch (in) | Wood touching soil | Drainage | Previous activity | Estimated score | Category |
|---|---|---|---|---|---|---|---|---|
| Dry yard, clean edges | Dry | Low | 1 | No | Good | No | 18 | Low |
| Mixed garden near trees | Temperate | Medium | 3 | No | Fair | No | 44 | Moderate |
| Humid, damp, wood contact | Humid | High | 5 | Yes | Poor | Yes | 86 | Severe |
Formula used
The calculator uses a weighted point system to estimate relative termite pressure from common garden risk drivers. Each factor adds points, while treatment can subtract points.
- Raw score = sum of factor points (clamped to 0–120).
- Normalized score = round((Raw score ÷ 120) × 100).
- Category: Low < 25, Moderate 25–49, High 50–74, Severe ≥ 75.
Tip: Use the breakdown table after calculation to see which conditions contribute most.
How to use this calculator
- Choose the climate and moisture conditions that match your yard.
- Enter mulch thickness and weekly irrigation events honestly.
- Mark any wood-to-soil contact and stumps or debris.
- Set inspection frequency and any existing treatments.
- Press Calculate Risk to view the score above the form.
- Download your result as CSV or PDF for records.
Why termite pressure varies by site
Termite activity depends on food, moisture, and protected travel paths. Warm regions with long seasons often support larger colonies, yet micro‑site conditions can dominate. Shaded beds, dense groundcover, and spots that stay damp after watering can raise risk in one corner of the yard. Soil type and sun exposure also change how long moisture lingers after rain. This calculator captures climate and on‑site moisture signals together.
Moisture and irrigation management
Moist soil reduces the effort termites need to forage, while repeated wetting limits the natural protection of dry wood and dry soil. Frequent irrigation, thick mulch, and poor drainage keep the soil surface humid. If you use sprinklers, shorten cycles, increase soak intervals, move water away from foundations, and fix pooling near downspouts. Check hose bibs and drip lines for slow leaks you may not notice. Modest moisture reductions can lower risk meaningfully.
Wood sources and construction details
Wood touching soil acts as a bridge into landscape timbers and structures. Stumps, buried roots, untreated posts, and stored firewood provide continuous food and shelter. Even small contact, such as siding too close to grade or raised‑bed boards set on soil, increases access. Separating wood from soil with brackets, gravel, or pavers disrupts this pathway quickly.
Landscaping and soil disturbance signals
Mulch benefits plants, but deep layers hide mud tubes and reduce visibility during checks. Vines, clutter, and stacked planters create blind spots that delay early detection. New beds and imported fill may introduce moisture pockets and wood debris. Keep inspection strips clear, maintain a visible wall gap at grade, and remove cellulose litter during seasonal cleanups.
Turning a risk score into an action plan
The category and factor breakdown help you focus on the highest‑impact fixes first. Address bridge issues, then moisture sources, then inspection frequency. A high score is not a diagnosis; it highlights where prevention and professional inspection deliver the best value. Re‑run the calculator after improvements to document risk reduction over time.
FAQs
1. What does the risk score represent?
It is a weighted indicator of conditions that encourage termite foraging and hidden entry, such as moisture, wood contact, and inspection frequency. It helps prioritize prevention; it does not confirm an active infestation.
2. How often should I inspect if my score is high?
For high or severe risk, do a quick visual check monthly and schedule a professional inspection at least once a year. Increase frequency after major landscaping, leaks, or storms.
3. Does mulch always increase termite risk?
Not always. Thin mulch can be fine, but deep, damp mulch against walls can hide tubes and keep soil humid. Keep mulch several inches below siding and leave a clear inspection strip.
4. Will chemical treatment make my score drop?
Yes, selecting an active treatment reduces the score because it lowers likelihood of establishment. Treatments still require moisture control and follow‑up inspections to remain effective.
5. Which single factor usually matters most?
Wood-to-soil contact is often the fastest risk multiplier because it creates a direct bridge. Removing contact points and separating wood from soil can produce immediate improvement.
6. Can I use this for indoor termite risk?
This calculator focuses on yard and garden conditions that influence pressure on nearby structures. For indoor concerns, pair it with a building inspection and address humidity, plumbing leaks, and crawlspace ventilation.