Apply with a sprayer or watering can. Determine the square footage to cover. Make two sweeps walking in different directions each time. Wash thoroughly after use. This is one way to help rid the garden of un-wanted plants.
Mature weeds take away a large amount of moisture and nutrients from the soil.
If you have a small garden hand pulling is good as you can usually remove roots and all. This is not reasonable if your garden is larger in that case a hoe is mandatory. A large garden calls for a rotary tiller, which makes the job much easier. Manual rotary cultivators work well on long rows especially if the weeds are small. Nonetheless these tools are not able to take care of weeds close to vegetable plants without causing damage.