Safest but most effective way to clean red brick?
I'm about to close on a 23 year old home with a brick front. It's in good condition, but near as I can tell they've never cleaned the brick front of the home.
I've read things like a mixture of bleach, muratic acid, TSP, and others. All of these are somewhat toxic, and the home has some plants and shrubs out front I'd like to keep.
I have a pressure washer, but of course I don't want to blast it with terribly high pressure. However I was wondering if there is a recommended solution that I can inject into a low pressure wash with a 40 degree tip? If possible, something organic?
Even if it's not as effective as the toxic options, I'll take a 60% effective organic method over a 100% effective toxic method.
Any help would be greatly appreciated.