Is it safe to use disinfectant detergents with my SPX3160P-SJG pressure washer? Yes, you can use disinfectants as detergent with your pressure washer, but only if the pH of the disinfectant is neutral. A non-pH-neutral disinfectant can corrode certain parts of your pressure washer over time. Related articles What detergents should I use with my SPX3160P-SJG pressure washer? Is it safe to use disinfectants as detergent with my Sun Joe SPX2100HH-SJG pressure washer? Can I use disinfectants as detergent with my SPX4004-MAX pressure washer?