Which detergent is compatible with the SPX-FC34-MAX? Only detergents specifically meant for pressure washers (such as Sun 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 the SPX-FC34. Related articles Why is my SPX-FC34-MAX not dispensing detergent? MJ401C-BLD Replacement Blade What kinda detergent can I use with my SPX-FC34 foam cannon? Can I adjust the spray of the Sun Joe Sky Lance? How do I connect my Power Scrubbing Broom model SPX-PWB1 to my Sun Joe Pressure Washer?