Hi-Yield Killzall Concentrated Weed Killer

Last updated date: April 3, 2022

DWYM Score

8.4

Hi-Yield Killzall Concentrated 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.

Update as April 20, 2022:
Checkout The Best Weed Killers for a detailed review of all the top weed killers.

Overall Take


In our analysis of 40 expert reviews, the Hi-Yield Killzall Concentrated Weed Killer placed 10th when we looked at the top 10 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

User Summarized Score

9.4
1,128 user reviews

What experts liked

The Hi-Yield 33693 Killzall Weed Killer is great for lawn renovation, stump treatment brush and vine control.
- The Architect's Guide
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.
- Garden Helpful
It enables you to cover and treat huge areas quickly and efficiently. Approximately 25,600 sq ft may be covered by 1 gallon.
- Drill Guy
Multi-use herbicide
- Growing Anything

What experts didn't like

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

An Overview On Weed Killers

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.

The Weed Killer Buying Guide

  • Weedkiller and preventer granules can be combined with dry fertilizer and spread simultaneously. This method is an excellent way to kill two birds (and many weeds) with one stone.
  • Be careful with broad-spectrum weed killers because they are non-selective and may kill desirable plants and grasses. The labels usually specify which weeds the products work on.
  • If you are overrun with a tough weed like nutsedge, choose a selective weed killer that lists the particular one on the label.
  • Herbicides don’t have expiration dates and can last for up to five years. Shake well before using and follow the label directions carefully.
  • Keep the weed container lid on tightly and away from high heat, sunlight, children and pets.