u/Cubby8

For note this is my house.

Buddy lent me a soft wash system and I can’t get my house clean. Spider egg sacs are killing me. White hardi plank. Hit it at 1.5 sh mix to start and tried 3.5 after. A good bit melts off, but it took me an hour on one side. Do I need to manually wipe the bottom edge with a scrubber or go hotter? Or use another treatment?

Any help is appreciated