Best way to clean 4 gallon Back Pack Sprayer and 16 gallon Tow Sprayer

Suggestions on best way to clean sprayers? I used my 4 gallon sprayer with Imidan on peaches. Want to make sure i get rid of any residue before I spray my apple trees, some of which are still in bloom.

If you have a tractor supply type store inI. The area, they will have a dry powder called nutrisol that cleans and neutralizes most sprays. Otherwise a soap and water mix flushed through followed by a household ammonia followed by a water rinse. For your specific chemical, a triple rinse with water should be eniugh.

I use plain old Dawn. Works on everything.

Except 2,4-d and dicamba products