I use a mistking with 2 nozzles without a drainage hole. both nozzles are on the same side and I have it set up that a small plastic tub, (tub the lettuce came in) that is covered with screen so cham cant possibly fall in, the majority of water ends up in the tub which I take out and drain every day or 2, my dripper also eventually drips into this tub. I have the timer set to go off approx every 2 hours for a minute each time and it seems to work out perfect that it dries out in between.