For some gardeners, the very thought of spraying a synthetic weed killer on the lawn has them reaching for a hazmat suit. Weed killers can be absorbed through the skin, and the long-term effects of some weed killers aren't yet known. Because of this, many gardeners are turning to homemade weed killers. Homemade weed killers are safer to use because they use common household products that you can find in your kitchen pantry.
Dust your yard or garden with corn meal. The gluten in corn meal acts as a pre-emergent herbicide because it dries out seed as soon as it cracks to open. In addition to using corn meal from your pantry, you can purchase corn gluten packaged as a pre-emergent herbicide in pellet or granulated form from several garden supply stores.
Soak a sponge with vinegar and swipe weeds with the mixture. Vinegar contains acetic acid and will kill the top growth of the plant. You must reapply vinegar to plants as they re-grow to continue killing the weed.
Place a pinch of salt around the base of a weed to kill it. The sodium in salt kills a plant, and prevents anything from growing in its place.
Pour rubbing alcohol into a spray bottle and use it to spot-treat plants. Place a drop cloth around the weed you wish to kill to protect surrounding plants. Rubbing alcohol will steal moisture from a plant and dry it out.
Saturate a cotton ball with bleach and swipe a weed with the bleach. Bleach acts as a systemic poison. The weeds absorb the chemical and die from it.
Place a piece of newspaper down over your plant to create a weed block. Newspaper will choke out all the light attempting to reach your weeds, which will kill them.
Set a stock pot of water on a stove and bring it to a rolling boil. Carry the pot of water outside and pour it directly on your weeds. The water will kill everything that it comes in contact with by cooking it. This method works best for driveways, and should be avoided for lawns.