What kind of detergent should I use with the SPX-FC34?

Only detergents specifically meant for pressure washers (such asSun Joe HOUSE + DECK WASH (SPX-HDC1G), Sun Joe SNOW FOAM AUTO WASH (SPXFCS1G), or Sun Joe HEAVY DUTY CLEANER (SPX-APC1G).)should be used with theSPX-FC34.