Look for products that have been specifically developed for use with paving or in gardens, rather than general herbicides, which kill everything. Those chemicals sold as suitable for paving or garden use tend to be slightly more selective and target the weeds without discolouring the paving or killing off adjacent lawns or bedding plants. Chlorine-based bleaches are found in many household "bleach" products, as well as in specialized products for hospitals, public health, water chlorination, and industrial processes.

To make a bleach weed killer, mix 2 tbsp. of bleach with one cup of water. The solution can be sprayed onto weeds using a spray bottle. Ensure you cover the weed entirely and rinse any plants that have been sprayed accidentlly with lots of cold water. You could also try using apple cider vinegar. Potassium persulfate ( K 2 S 2O 8) and other persulfate salts. It, alongside ammonium and sodium persulfate, is common in hair-lightening products. [24]Firstly, bleach can cause extensive damage to the soil, which can take a long time to correct itself. This damage can potentially harm other plants, creatures, and ecosystems in your garden, which is not worth the risk. Disadvantage Peroxide-based bleaches– this one’s active agent is oxygen, almost always from the decomposition of a peroxide compound such as hydrogen peroxide. There are also stories of spouses enthusiastically cleaning their garden furniture, only for their partner to find all the nearby flowers dead the next time they head outside to water them. Phillips, H. (2008). "The Bleaching of Wool with Sulphur Dioxide and with Solutions of Sulphites". Journal of the Society of Dyers and Colourists. 54 (11): 503–512. doi: 10.1111/j.1478-4408.1938.tb01992.x. The significant increases observed in indoor air concentrations of several chlorinated VOCs (especially carbon tetrachloride and chloroform) indicate that bleach use may be a source that could be important in terms of inhalation exposure to these compounds. While the authors suggested that using these cleaning products may significantly increase the cancer risk, [28] [29] this conclusion appears to be hypothetical:

The undiluted bleach can seep into the soil and affect the surrounding plants, causing soil quality damage and ecosystem harm. Bleach can cause long-term damage to the soil, affecting its quality and the surrounding ecosystem. When it comes to killing weeds, Clorox is preferred and used more often due to its potency and the fact that it is widely available in stores. The main difference is that Clorox is a brand name and contains sodium hypochlorite, a highly acidic pH. Whereas, chlorine bleach is made from either calcium hypochlorite or sodium hypochlorite and can also be used with great results. Is Bleach a Safe Herbicide? Use special tools designed for narrow spaces. If you can’t fit your fingers into thin crevices between stones, use a tool made for the job Oxidizing bleaching agents that do not contain chlorine are usually based on peroxides, such as hydrogen peroxide, sodium percarbonate, and sodium perborate. These bleaches are called "non-chlorine bleach", " oxygen bleach", or "colour-safe bleach". [2]

Overall, when it comes to killing weeds, bleach is much better. Bleach will kill weeds in 1 – 3 days usually How to Use Bleach As a Weed Killer A weed burner is a great way to weed small areas or pathways. Petrol-powered or electric weed burners are designed to apply high concentrations of heat directly to the plant. A weed burner can be used to eliminate weeds on a plot before crops come up or between rows of crops. The downside of this method is that it will heat up the top layer of soil. Mulching Yes, bleach can kill weeds permanently. Simply spray bleach on problematic areas on a calm day while wearing safety gloves and eye protection, and you can effectively stop weeds from growing. Bleach is a potent herbicide that can effectively eliminate most small weeds and even grass. Keep in mind that larger or invasive weeds, like ivy, brambles, or knotweed, may require a different approach. It is crucial to take safety precautions when using bleach. It is recommended to wear safety gloves and eye protection before spraying bleach and to avoid using it near children and pets until it has dissipated. Bleach should also not be used near sources of water or in aquatic environments and should be avoided near plants you desire, lawns, or edible crops. Additionally, it is important not to mix bleach with other chemicals, which can lead to dangerous chemical reactions. What Are the Different Types of Bleach? Tatjana Topalović (2007). Catalytic Bleaching of Cotton: Molecular and Macroscopic Aspects p 16. Thesis, University of Twente, the Netherlands. ISBN 978-90-365-2454-4 . Retrieved 8 May 2012.