Jomax is mixture of Acetic Acid (vinegar) and water. pH is between 3.0 & 3.5WildBill wrote: P.S. Supposedly Jomax neutralizes the bleach. I was careful not to get any on the lawn. I guess will see in a couple of days.
Bleach is mixture of Sodium Hypochlorite, Sodium hydroxide, and water. pH is between 11 & 12
By themselves, both are effective mold and mildew removers. Mixing them together neutralizes the solution, reducing or even eliminating its effectiveness.
Use one or the other, not both at the same time - you will get much better results. If you are concerned with damage to siding, vegetation, etc then just use the power washer with no chemicals - it the psi is high enough you wont need any chemicals.
As far as a power washer is concerned, if you only plan on using it once or twice a year you can rent them from Home Depot & Lowes. This way you can get a gas powered model with a much higher PSI and not have to worry about storing gasoline, high cost, etc.