186. Once a child is 6 or 7 you must distance yourself from his excrement and urine. Younger than that depends upon when the child can eat a k’zayis daggan bichday achillas prass. (ShA 1 – MB 1 – ShaH 5)
187. The above rule is min hadin, but it is good and proper to distance even from excrement of an eight-day old baby. (MB 3)
