Drenching Gun Multiple SizesQuality manual drencher Available in 70 ml, 150 ml and 250 ml The 70ml Drencher Gun is a manual gun used for administration of various drench liquids. The gun is simple and effective to use. Once the drench liquid is adjusted, squeeze the trigger and suck the required quantity in. The large bore nozzle helps the liquid to flow through it easily. The Drench Gun can be sterilised with warm water to keep it clean and safe.