Can I use disinfectants as detergent with my SPX2599-MAX pressure washer? You can use disinfectants as detergent with your pressure washer so long as the PH of the detergent is neutral. Using a non-PH-neutral detergent with your pressure washer can cause certian parts of your washer to corrode faster. Related articles Is it safe to use disinfectant detergents with my SPX3160P-SJG pressure washer? How do I assemble my SPX3000® Pressure Washer? How do I assemble my SPX2599-MAX? SPX2599-MAX Electric Pressure Washer What detergents can I use with my Sun Joe SPX2100HH-SJG pressure washer that won't damage it?