Very dirty mop, do not buy it again: a drop of this ingredient and it will be as good as new again

If you want to ensure a better cleaning,  add two tablespoons of baking soda to the water.  This will maximise the degreasing and sanitising effect. After the lemon, clean the mop well. Fill a container with water, pour the juice of 2 lemons into it, then put the rags and the mop in it and leave it inside for an hour. Then rinse.  Lemon is used not only to remove dirt, germs  and bacteria but also to combat bad odours.

Water, ammonia and tea tree oil, the most suitable solution