Harsher but works.

Those weed and feed granules have a chemical in them that inhibits seed sprouting - meant to prevent weed seeds from sprouting but also can affect grass seed.

thanks, Stephen i started it just hours ago and am going the poured-concrete route.put a bulkhead (shower drain) in the middle already of the framed 'pan' with 3" recycled abs leading to my garden irrigation channels.pretty much the only chemicals that will get added to the grey water will be very dilute antibacterial bar soap and the occasional leak while showering that cant wait after a few beers gardening under hot socal sun so hopefully the system's ecofriendly to.

@Lee Scarlett,There are chemical adhesive removers you can get.

TPO roofs would be ideal as it not only resistant to UV rays, but also to ozone and chemical pressure.

You can use midwest chemicals for the chemicals, about the best.

Billions in commitment from ConnocoPhillips, Marathon Oil, Ashland Chemical, Pioneer, Wood Group, and more. 

I think many folks are employed by some chemical plants in the area.

On a typical move-out/move-in job I had my "standard" tool box plus a materials box containing;the standard paint color I used for rentals-Navajo White, a bunch of paint stirring sticks (for sheetrock repair more than stirring paint), a couple of pieces of sheetrock 2' X 2', Elmer's glue, sheetrock screws, switch plates, a couple of outlets and switches, scrubbing stuff and chemicals, DOORSTOPS, light bulbs, mineral spirits and linseed oil and 000 steel wool for touching up stained wood, paper towels, TOILET PAPER, rags, paint brushes, SMALL LADDER, joint compound.Once you've gone through every room doing the "touch ups" you'll have a good idea if you need to come back with your 8' and extension ladders, paint rollers and 5 gallon can of paint and drop clothes.

Cellulose is basically paper they mix with chemicals to give it a fire retardant quality.