How do I know when to change the disinfectant solution in my jar?

Doug Schoon: Yes, as debris builds up in the disinfection solution, it will become less effective. In fact, bacteria can grow inside you disinfectant if it’s not changed often enough. It is a good rule of thumb to change disinfection solution as soon as it becomes cloudy. Clients don’t like to see implements pulled from a jar of cloudy or dirty liquid. Also, make sure to thoroughly clean implements and files before you put them into the disinfectant. They cannot be properly disinfected unless they are completely free of dusts and other debris beforehand.