separate them when play becomes loud. take away toys etc. restore peace, give the toys back.
they will scream and fight it a lot the first few time, but if you keep a constant, predictable and strict response they'll get the idea, eventually, that they need to play in acceptable ways.
also make it clear that it only applies in specific time/places (evening, home, public indoor building) and where it's acceptable (afternoons, parks, etc)
separate them when play becomes loud. take away toys etc. restore peace, give the toys back.
they will scream and fight it a lot the first few time, but if you keep a constant, predictable and strict response they'll get the idea, eventually, that they need to play in acceptable ways.
also make it clear that it only applies in specific time/places (evening, home, public indoor building) and where it's acceptable (afternoons, parks, etc)