Time to check your drenching gear
With lamb and calf drenching starting, give your drenching equipment the once over to prevent poor performance.
Check that the guns are drawing properly, that the rubber seals are not perishing and that the draw off tubes and connections fit the backpack you will be using.
Calibrate your gun to check the volume the gun is delivering. An easy way is to deliver a number of squirts into a cup and suck the expelled drench back up with a syringe. Measure the volume and divide by the number of squirts you made.
Clean gear well and do not mix drenches. Squirt the unused drench back into the original container, then wash through with warm water and mild detergent. Lubricate as per recommendations and dry well before the next use.