Yes, they are tricky enough to clean - 3 flushes of the cycle with very warm water - each flush takes about 10 minutes - but then it is clean, (give or take the odd little bit) Great for big rooms. you will do it in quarter the time - you still have to do all the cutting in at the edges. For small rooms they are not as time-saving - the paint is very good quality - no drips or spray - limited range of colours.