Because it is soft water pressure and the amount of water is high, I am able to do watering in a short time and I am saved. If there is a difficulty, since the hole in the shower is small, it is easy to clog when well impregnated with a lot of impurities, etc. In our house, we use the toothbrush scrubbing with a toothbrush to remove the shower part and wash it. It seems that it is useless at about # 120 of the disk filter, and # 200 may be necessary. Of course it is not a problem if it is a water supply.