Good reading WB! I remember years ago, I was preping a log cabin for stain and I would load my paint sprayer with a dilluted mixture of bleach and water to remove years of stains from the unfinished logs. I stopped for the weekend and the owner decided he would "speed" things along, but my mixture wasn't working quick enough for him so he added some toilet bowl cleaner. He started to pass out from the fumes and had to go to the hospital when his breathing became labored! Lucky he didn't die!! Turns out that was a deadly mixture! You gotta watch what you're doing all of the time....CR