But if you don't want unsightly dead weeds in your garden. You still have to remove any existing weeds. And their roots by hand preen is not a weed killer. It's a weed preventer.

Preen Natural Vegetable Garden Weed Preventer offers completely natural weed prevention and is safe for use around children and pets.

Preen Garden Weed Preventer Plus Plant Food is safe for pets when used according to the instructions. However, it is important to keep pets off of the garden bed for a period of time after application to allow the product to fully activate.

Top 6 Weed Killers

• Best Weed Killer Concentrate: Sunday Weed Warrior Herbicide Concentrate.
• Best Non-Toxic Weed Killer: Green Gobbler Vinegar Weed & Grass Killer.
• Best Weed Killer for Large Areas: RM43 43% Glyphosate Plus Weed Preventer.
• Best Weed and Grass Killer: Spectracide Weed & Grass Killer.

Preen ® Garden Weed Preventer helps to prevent germination of seeds from the list of weeds shown on the label for up to 12 weeks per application. It does not kill or inhibit existing weeds in any way.

Lebanon Seaboard Corporation Lebanon Seaboard Corporation is a manufacturer of lawn and garden, wild bird food and professional turf products. Our brands include: Preen, GreenView Fertilizers and Grass Seed, Lyric Wild Bird Food, Lebanon Pro, ProScape and Woodace.

Preen Natural Vegetable Garden Weed Preventer is made with 100 percent corn gluten, a natural herbicide that works as a pre-emergent - it keeps weed seeds from sprouting. And, Preen Natural Vegetable Garden Weed Preventer is safe to use around children and pets.

The active ingredient in Preen is trifluralin. It is a suspected carcinogen, and is toxic to fish and aquatic life, and earthworms.

Weed control products work by interfering with weed growth either by blocking photosynthesis and protein production or by destroying or inhibiting root formation. Weed control products may be post-emergent or pre-emergent and are applied at different times for different purposes.

While vinegar is the key ingredient, it works best in tandem with dish soap and salt. According to Reutinger, the weed kill recipe calls for mixing together: 1 cup of salt. 1 tablespoon of dish soap.

Garden Weed Preventer plus Plant Food prevents weeds and feeds plants in one easy step. Balanced fertilizer promotes abundant blooms, increased yields and strong root development. Safe for use around over 200 established flowers, vegetables, trees and shrubs.

You can control weeds by using a preemergent, such as Preen Garden Weed Preventer, which keeps seeds from sprouting. If the seeds have already sprouted, you'll need to apply a weed killer.