1: Fill a cup with 50% water and 50% alcohol
2: With your device assembled, suck the fluid up out of the cup, through the device and into the syringe and spray it into the sink.
3: Repeat this 3 times with 50/50 solution
4: Then repeat steps 1 and 2 with plain filtered water.
5: Wash exterior with dish-soap
6: If not satisfied with the level of clean, repeat this process until satisfied.