1. Separate them
In two different rooms for a designated time. Use a timer.
2. Let them play outside
They are less likely to fight in public.
3. Job Jar
If they are caught fighting there is a jar in the house that has chores they can do around the house. If they fight, they pick from the job jar and get to work.
4. Money Jar
Every time they fight money goes into mom’s jar and out of their jar.
5. PushUps or Situps
10 each. We aren’t the military, but we need to (WHOA)man the ship.