Termite Trench Termiticide Gallons Calculator

The verified part is the geometry. The EPA-registered label rate is 4 gallons of finished dilution per 10 linear feet — per foot of depth. Most calculators compute the surface barrier and forget the depth multiplier, under-dosing the trench. This one foregrounds it:

finished gallons = (linear feet / 10) × 4 × trench depth (ft)
                 = 0.4 × linear feet × depth

concentrate (fl oz) = finished gallons × rate (fl oz / gal)
water (gal)         = finished gallons − concentrate / 128
bottles needed      = ceil(concentrate / bottle size)

Why depth matters: at 150 linear feet, a 1-ft trench needs 60 gal; the same 150 ft at a full 4-ft footing needs 240 gal — four times as much. The Pest Control Technology worked example reproduces exactly: 180 linear ft × 1 ft = (180 ÷ 10) × 4 = 72 gal.

The finished-gallons rate (0.4 gal/ft/ft) is verified against Pest Control Technology's "Termite Control: Calculate It Correctly." The concentrate dilution figures (0.06% ≈ 0.8 fl oz/gal, 0.09% ≈ 1.2, 0.125% ≈ 1.6) are an illustrative default, not independently confirmed — the manufacturer label PDF was not machine-readable at sourcing time. They ship as an editable rate you override with your product label's figure before mixing. Lengths are converted through meters internally; the gallons math runs in the rate's published imperial units so it reproduces the label arithmetic exactly.

Finished gallons tell you what to mix, not what to buy or what to charge. The termiticide concentrate yield calculator converts the same gallons into bottles and cases, while the slab pretreatment coverage calculator handles the horizontal pre-pour barrier, which runs on a per-square-foot rate instead of this linear one. To turn the whole treatment into a number the customer sees, the termite pretreatment pricing calculator builds the bid, and the warranty pricing for the bond covers what usually rides along with it.