Fumigation Volume Calculator

Structural fumigation dosing is built around sulfuryl fluoride (marketed as Vikane), and this calculator scales the standard dosage rate — measured in ounces of fumigant per 1,000 cubic feet of enclosed space — by your target pest and the ambient temperature. Bed bugs require the highest base dosage (48 oz/1,000 cu ft) since they're more tolerant of the gas than termites (32 oz) or stored product pests (24 oz), and that base rate is then adjusted by a temperature correction factor: below 65°F the gas is less effective at penetrating cracks and crevices, so dosage rises 25%, while above 80°F molecular activity increases enough that dosage can drop 10%. Exposure time — how long the structure must stay sealed and tented — also varies by pest and gets the same temperature correction, since colder conditions slow fumigant penetration and require longer contact time to achieve full kill.

Aeration time (ventilating the structure to safe re-entry levels) is set at 6 hours in warmer conditions or 8 hours below 70°F, since gas dissipates more slowly in cold air. Total Job Time adds these two phases plus a flat 4 hours for setup and teardown — tenting, sealing openings, staging, and later removing the tent and equipment. This is a planning estimate based on standard label rates, not a substitute for the fumigant label itself or a licensed applicator's on-site judgment: actual required dosage depends on structure tightness, the specific fumigant product used, and local regulatory requirements, all of which can shift the numbers meaningfully from what's shown here.