My son in law is a landscaper. He uses regular boxed salt to get rid of weeds and it really does work. How nice to find something so cheap and eco friendly to take care of weed problems.
By gem from VA
This page contains the following solutions.
A great, thrifty, non-toxic, and environmentally friendly way to rid spaces of weeds is to simply pour boiling water on them. I use my electric tea kettle and bring some water to a boil. Then I go out and pour the boiling water on any weeds I want to get rid of.
Keep the weeds down for over a year in a rock garden by using white vinegar. It may even last longer than a year. I no longer have weeds in my white rock. It kills everything, so keep it away from the lawn and flowers.
Spray hot vinegar on the weeds. No chemicals, and very organic. To help prevent germination of weeds, scatter corn meal around before a rain.
I have lots of rocks around all my flower beds in my yard. Some are really large, and weeds always found a space to come up in between them.
Most of the rocks that I move are for edging, which would make them around bowling-ball size. The tines of the rake hook onto the ragged edges of the rocks very well, and you can just move them along the ground without having to bend over.
Here are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community.
There are weeds in bricks near my garden. How can I get rid of them without killing my plants?
By Brenda
Pour boiling water on them.
Vinegar is good. Just dont get it on the plants
Do you use white or cider vinegar when you spray and do you spray on warm or cold
Use white vinegar. You can add just a bit of dish soap in the spray bottle. Try to use on a sunny day. The vinegar goes through the plant down to the roots and kills them.
I live in Arizona an get these sticky weeds that are in my rocks. I have try everything can someone plz help?
Second question does anyone know what the landscapers use that is blue? 
I"ve had great luck killing weeds with boiling hot water. You just pour it over the suckers and they don't stand a chance.
Spray with vinegar. Natural and effective.
It works for me too, especially on the driveway and sidewalk. I have also poured boiling water on sugar ant nests.
How dI'd hou find where the sugar ants were nesting? Our house is surrounded by them! I think I'll pour boiling water aroundthe entire perimeter!
Poor ants...
Does anyone have any ideas for how to kill weeds among the stones and also in the carport which is made up of brick tiles. I have tried vinegar but it does not work. Thanks.
By annette from Sydney, Australia
1 gal of vinegar, 1/2 cup regular table salt, a GOOD squirt of LEMON dish detergent in a watering can. Mix together so salt dissolves and 'water' the weeds.
What do you do with the dogs when you use the boiling water with vinegar
The "blue stuff landscapers use" is this dye: www.amazon.com/
Does rock salt kill grass in a rock walkway?
By Karen
1 gallon white vinegar, 1 cup table salt, and 1 tablespoon dishwashing liquid. Pour this on the weeds.
Or you can just pour Morton table salt on the weeds in between the rocks. Make sure it is mounded or sticking up in mounds at least one inch or so above the rocks.
wiki.answers.com/
Blessings, Robyn
Take your tea kettle full of boiling water to the weeds. Cheaper and works on most. GG Vi
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