Hi-Yield Killzall Liquid Double-Surfactant Weed Killer

Last updated: June 1, 2023

Hi-Yield Killzall Liquid Double-Surfactant Weed Killer

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We looked at the top Weed Killers and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Weed Killer you should buy.

Overall Take

This powerful weed killer works on everything from clover to chickweed to dandelions. It's highly concentrated and can be used anywhere you find weeds popping up. That includes around your brick patio, along your sidewalk or in between your fence posts.

In our analysis of 36 expert reviews, the Hi-Yield Killzall Liquid Double-Surfactant Weed Killer placed 5th when we looked at the top 14 products in the category. For the full ranking, see below.

From The Manufacturer

Short, concise consumer-friendly label. Non-selective weed and grass killer, contains a double-surfactant formulation that dries on plant fast to start working quickly. Multiple use formulation…near fences, in paths, patios, sidewalks, curbs and driveways. DO NOT USE IN LAWNS. Use around ornamental trees, shrubs, flower beds and buildings. Labeled for lawn renovation, brush and vine control and stump treatment.

Expert Reviews

What experts liked

The Hi-Yield 33693 Killzall Weed Killer is great for lawn renovation, stump treatment brush and vine control.
While it is best to make sure there is no rain in the forecast, it is rainproof in just two hours. Therefore, you can spray it before a storm comes in, and it is going to dry and not get washed away.
It enables you to cover and treat huge areas quickly and efficiently. Approximately 25,600 sq ft may be covered by 1 gallon.
Multi-use herbicide

What experts didn't like

This concentrated formula has to be mixed with water to be most effective.
This product might not work with wild garlic/chives


Also known as herbicides, weed killers are chemicals applied to control and eliminate unwanted vegetation like weeds and crabgrass. They can inhibit a weed’s cell division or photosynthesis and disrupt its amino acid production.

Other weed killers mimic natural plant growth hormones and cause deformities. You can spray them onto foliage or soils, and one of the best-known weed killer chemicals is glyphosate. This chemical is an amino acid disrupter with a broad spectrum and low toxicity to animals.

Chemical-based weed killers are more common, but natural herbicides can also work pretty well. Some contain citrus oil and vinegar, which causes weeds to dry out, curl up and die. These are good for people who have pets and small children, but the chemical counterparts can be just as safe when applied according to the label directions. The best ones work in 24 hours or less, so it’s best to keep everyone away from the area for the time specified on the product label.

Some retailers sell liquid herbicides in smaller, ready-to-use containers or in concentrate form; these methods can be cost-saving. You must apply granular weed control products with spreaders, which is easy to do if you need to cover a whole lawn.

Pre-emergent weed killers are not referred to as herbicides; they are weed preventers and attack sprouting weed seedlings before they emerge from the ground. You’ll want to use these in the spring and fall. Herbicides, which are known as post-emergent weed killers, control existing weeds instead.

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