wrote in message
...

Trying to treat mold in crawl space with 20% bleach in water. I
thought I could spray it on, but it beads up and runs off.

Household bleach is already diluted, commonly 3 to 6 per cent
sodium hypochlorite: so 20% bleach in water applies less than
1 per cent of the mould-killing solution. You may make better
progress if you use bleach straight out of the bottle.

--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)