Who sells Spectracide weed and grass killer?

Lowes.
Spectracide Weed and Grass Killer 1-Gallon Trigger Spray Weed and Grass Killer in the Weed Killers department at Lowes.com.

Does Lowe’s sell pre-emergent?

Preen 5.625-lb 900-sq ft Pre-emergent Herbicide.

Is Spectracide weed Stop a pre-emergent?

As a post-emergent, this herbicide offers control of weeds that have already appeared in your lawn whereas a pre-emergent, on the other hand, prevents weeds from appearing.

Does Spectracide weed killer work?

Rapid action: Spectracide works much faster than Roundup, and you may see results in 3-5 hours. Therefore, it could be an excellent option if you need to kill weeds or grasses as quickly as possible. Long-lasting in soil: Spectracide has a much longer half-life in soil, remaining for around 32 days.

How long does it take Spectracide weed and grass killer to work?

Sprayed plants begin yellowing and wilting in as little as three hours, with complete kill, including the roots, in one to two weeks. Thoroughly cover treated areas to prevent new weeds and grasses from growing.

How much is a bag of pre-emergent?

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Is Spectracide weed killer safer than Roundup?

The main difference between how Spectracide and Roundup work is that Roundup successfully kills the entire weed including roots while Spectracide, on the other hand, only kills the part of the weed that it touches. Spectracide may be safer than Roundup and it does not persist in soil or water.