Having trouble cleaning my garage floor (cement) and my backyard pave stones. I have oil stains, grease, wd-40 stains... I was also soaking some rusted car parts in white vinegar for about a week, and when I went outside to hose them down some spilled on the garage floor. As for outside, its pretty much the same thing stain wise. The vinegar turned kinda orange and thats the color stain it left. I have tried the purple power stuff, some simple green concrete cleaner, CLR, dawn, bleach, goof off, even with my pressure washer. Ive scrubbed with a broom too. The only thing that seems to remove the vinegar stains is a wire brush, but it leaves the floor/stones looking a little funny like im removing the color. Im not too worried about the grease and oil stains, I feel those i can maybe get out. But that vinegar just wont go! any input would be apprectiated! attached photos!

My property is about half-way down a hill, and my driveway drops about 10 feet. As a result, I get a bunch of silt washing down my driveway. When they put the driveway in, they put a swale at the bottom to direct the water into the yard. But all the silt is making a mess of my yard. I tried putting some stone down, but that's not stopping the silt. Is there something commercially available or DYI device I could build to trap the silt?