Calculator
Example data
Sample values show a common workflow. Replace them with your label and job data.
| Scenario | Inputs | Outputs |
|---|---|---|
| Label rate by volume |
10 gal spray volume 0.8 fl oz/gal mix rate 5% waste factor 5 gal tank |
10.50 gal total spray volume 8.40 fl oz concentrate (total) 10.39 gal water (approx.) 2 tanks, 4.20 fl oz per tank |
| Area-based |
2,000 sq ft area 1 gal/1,000 sq ft application rate 1.0 fl oz/gal mix rate |
2.00 gal spray volume 2.00 fl oz concentrate (total) 1.98 gal water (approx.) |
| AI% estimate |
20 L spray volume 25% product AI 0.06% target AI |
0.048 L concentrate (≈48 mL) 19.952 L water (approx.) |
Formula used
- Volume from area: Total Spray Volume = Area × Application Rate
- Label-rate mixing: Concentrate = Mix Rate × Total Spray Volume (after unit conversion)
- Water (liquid concentrates): Water = Total Spray Volume − Concentrate
- Waste factor: Adjusted Volume = Base Volume × (1 + Waste%/100)
- AI% estimate (optional): Concentrate Fraction ≈ Target AI% / Product AI%, then Concentrate = Fraction × Total Volume
- Batching: Tanks = ceil(Total Volume / Tank Size), then split totals evenly per tank
AI% mode assumes additive volumes and similar densities. For termiticides, label-rate mixing is usually the best method.
How to use this calculator
- Select a calculation method that matches your label and plan.
- Enter either total spray volume or area plus application rate.
- Enter the label mix rate in your preferred units.
- Optionally add a waste factor and concentrate price.
- Click Calculate to see totals and per-tank batches.
- Download CSV or PDF to save your job notes.
Safety reminder: Always wear appropriate PPE and follow label directions, local regulations, and any licensing requirements for termiticide use.
Why accurate dilution matters
Termiticide performance depends on delivering the labeled dose to soil. Too weak a mix can leave gaps in the treated zone, while an overly strong mix wastes concentrate and can increase odor, staining, or plant stress near foundations. This calculator converts your chosen rate into exact concentrate and water totals, then applies an optional waste factor to cover hose priming, tank residue, and overspray.
Understanding label rate units
Product labels commonly state dilution as fluid ounces per gallon or milliliters per liter. The calculator normalizes these units to liters of concentrate per liter of finished solution, so totals stay consistent when you switch between gallons, liters, quarts, or milliliters. For dry formulations entered as grams per liter, the tool reports the final water volume and treats the solid addition separately.
Area-based planning for perimeter work
When your job is defined by treated area, the area-based method estimates required spray volume using an application rate such as gallons per 1,000 square feet or liters per 100 square meters. This helps you plan how much mix is needed for soil trenches, slab edges, and garden borders, and it creates a repeatable approach for multiple zones on one property.
Batching and equipment efficiency
Large jobs often require several refills. Entering a tank size lets the calculator split totals into equal batches, showing per-tank concentrate and per-tank water. This reduces measuring errors across refills and improves consistency between early and late tanks. It also helps estimate refill count, pump runtime, and labor pacing. If you track concentrate price, the cost field supports budgeting, bid review, and inventory reordering decisions for projects too.
Quality control and safety checks
Before mixing, confirm the label target rate, water source cleanliness, and measuring accuracy. Add concentrate to water, agitate as directed, and recheck totals if you change nozzle output or application rate. AI percent mode is included for quick estimating, but label rates should govern mixing decisions and compliance.
FAQs
How do I choose a waste factor?
Use 0% for careful bench mixing. Use 3–8% for hose priming, tank residue, and minor overspray. For long hose runs or frequent refills, up to 10–15% can be reasonable, but never exceed label maximum application limits.
Why is water sometimes shown as total volume minus concentrate?
For liquid concentrates, the final spray volume is typically the sum of water plus concentrate. Subtracting concentrate from the target volume estimates how much water to add to reach the intended finished volume after mixing.
Is the AI% method a substitute for label directions?
No. AI% mode is an estimating shortcut when you only know concentrations. Mixing should follow the product label, local regulations, and any licensing rules. Use AI% only for planning, then confirm the correct label dilution before applying.
How do I plan for trench or perimeter treatments?
Measure the zone, then convert your plan into an area or a total gallons requirement based on the label’s application rate. If the label uses linear feet, multiply linear feet by the specified gallons per foot to get total spray volume.
Do dry products in grams per liter change the water volume?
Dry formulations dissolve into the water, so the calculator reports water as the finished spray volume for convenience. Measure the water first, then add the weighed product and mix thoroughly, following label instructions for agitation and settling time.
How can I confirm my sprayer output matches my application rate?
Calibrate by spraying into a container for a timed interval, then compute flow per minute. Combine flow with walking speed and swath width to estimate applied volume per area. Adjust nozzle, pressure, or pace until it matches your target.
Practical notes
- Double-check your product label for trench depth, linear footage, and required gallons.
- If your label provides a “per linear foot” rule, convert that to total gallons first.
- Use clean measuring tools and add concentrate to water, not the reverse.
- Mix thoroughly and keep the solution agitated as directed.