When should you not use agitator?
Your clothes will be more clean from this versus a washer without an agitator. Delicate items are better washed in a non agitator machine since this will give you less wear and tear on clothes. Mainly you’ll be looking at those few things: capacity, what cleans better, and what is more gentle on clothes.
Does detergent go inside the agitator?
Detergent goes in with clothes. Softener goes in agitator and separate bleach dispenser.
Do agitators make a difference?
Washing machines with an impeller tend to wash your clothes better than with an agitator. That means that, generally speaking, front load washers or top load washers without an agitator will do a better job at getting rid of tough stains and dirt off your clothes.