any of you that have ever used this chemical, can you tell me how you applied it. In other words, is it better to spray this on a wet house or to spray it on a dry house. I dont ever want to run in to the issue of discoloration or spots of where i sprayed it at. Also, it seems to be worse that voo doo to reveal what chemicals you use or what mixture of chemicals you use but if any of you wouldnt mind telling me something via PM what would be better than this stuff, i would greatly appreciate it. Ive only done 2 houses this year, that shows you how much i actually do this stuff. However when someone calls i would like to offer them a service with excellent results and be the easiest on me as well. Im in a small town in Ga and we are limited to what we have other than big box stores 30 mins away. For the record. I used this on a home with excellent results. I did however use a regular pressure washer 2500psi 2.3gpm. I know, it sucks. Thats what i have for now. I sprayed it out of a regular ol back pack sprayer. That was kinda aggrivating but me mixing up the solution in a 5 gal bucket and spraying it through the pressure washer with a black tip just wasnt near strong enough to really do anything. is there an adjustment to change the ratio on these machines.