Here is an easy, homemade recipe for weed killer: 1 gallon of white vinegar, 1 cup of table salt, and 1 tablespoon of liquid dish soap. Pour it into a spray bottle and you will have a formidable weed killer. Just be careful to not spray it near any grass or plants that you want to keep because it can be harmful.
Will the vinegar’s scent attract flies or other insects?
Also, if you plan on replanting an area, be careful about using a salt-based mix because the salt can make it difficult to grow desirable plants, and grass after the weeds are killed. That’s not a problem with glyphosate as it degrades when it hits soil.