and weeds grow up between the rocks like crazy. I don't like products like Preen and ...
I have rock landscaping surrounding my Michigan home, and weeds grow up between the rocks like crazy.  I don't like products like Preen and Roundup, so I found a recipe online (1 gallon vinegar, 1 cup salt, 1 T dish soap) that kills vegetation without all the nastiness that commercial chemicals have.  They say to spray it on, but I found that pouring it on the leaves of weeds starts killing them in just a few minutes--amazing.  But I needed something that I could control the rate of pour with, and these fit the bill nicely.  Every week or two (depending upon the rain we get), I fill these up with my mixture, and head out to kill some weeds.  It works like a charm, and the bottles make this extremely easy and effective--you can direct the solution right where you want it to go, no waste.  A perfect solution for my homemade weed-killing solution!
Rating: 5 stars