Share 'Discipline Methods'

Anyone have good tips for a pregnant mother with a 3 year old and a 1 1/2 year old who love to hit, scratch, shove, slap, kick, etc?  My old assistant (who is now working somewhere else) said we are spoiling them, and they need to be spanked.  My new assistant is lovely with them, and tries to divert them as opposed to physical punishment (we are against it!  But maybe we are wrong....), but both…