If you’ve spent hours pulling weeds only to see them return a few days later, you’re not alone. That’s why homemade weed killer recipes continue to go viral online. One of the most popular claims is that a simple spray can dry out weeds in just a couple of hours.

But does it really work?

Here’s everything you need to know about this popular DIY garden hack, how to make it, and when you should—and shouldn’t—use it.

Why Homemade Weed Killers Are So Popular

Many gardeners prefer homemade solutions because they’re:

Affordable
Easy to make
Made from common household ingredients
Useful for treating weeds in driveways, sidewalks, patios, and gravel paths

While these mixtures can be effective on certain weeds, they aren’t a miracle solution and should be used carefully.

DIY Weed Killer Recipe

Ingredients

1 gallon (3.8 L) white vinegar (5% acidity)
1 cup table salt
1 tablespoon liquid dish soap

Instructions

Pour the vinegar into a large container.
Add the salt and stir until completely dissolved.
Mix in the dish soap.
Pour the mixture into a spray bottle or garden sprayer.
Shake gently before each use.

How to Apply

Spray directly onto the leaves of unwanted weeds.
Apply on a hot, sunny, dry day for the best results.
Make sure the leaves are thoroughly coated.
Avoid spraying before rain is expected.

Many annual weeds may begin to wilt within a few hours, especially in warm sunshine. Tougher or perennial weeds often require multiple applications.

Does It Kill the Roots?

Not always.

This homemade spray mainly burns the leaves and stems. Deep-rooted weeds such as dandelions, bindweed, or nutsedge often survive and may grow back.

Repeated treatments may weaken them, but complete removal usually requires digging out the roots or using other weed-control methods.

Important Precautions

This spray does not distinguish between weeds and desirable plants.

Avoid spraying:

Flowers
Vegetable gardens
Lawns
Shrubs
Young trees

Also remember that excessive salt can remain in the soil and make it difficult for future plants to grow. For that reason, this recipe is best suited for areas like driveways, sidewalks, patios, and gravel paths—not garden beds.

Tips for Better Weed Control

Spray during the hottest part of a sunny day.
Remove large weeds before spraying.
Reapply if new growth appears.
Pull dead weeds after they’ve dried.

Final Thoughts

Homemade vinegar weed killer can be an inexpensive way to control small weeds, especially on hard surfaces. However, claims that it “kills everything in two hours” are exaggerated. Results vary depending on the type of weed, weather conditions, and the maturity of the plant.

Used responsibly, this DIY solution can be a helpful addition to your gardening routine—but it’s not a permanent cure for every weed problem.