Is 2,4-D safe for dogs? What labels and NPIC say
Based on EPA labels and sources cited below, last checked November 4, 2026. Always follow the label on your product.
Short answer: NPIC says dogs may be more sensitive to it than other animals. Follow the label's re-entry rule. For granular lawn products, NPIC says pets may need to stay off 24 hours or longer.
Where you will find 2,4-D
Two examples with their labels (check the active ingredients on any other product):
| Product | EPA Reg. No. | 2,4-D content | Label re-entry rule |
|---|---|---|---|
| Scotts Turf Builder Weed & Feed (granular) | 538-333 | 2,4-D 1.22% plus dicamba | "until dusts have settled" |
| Scotts Liquid Turf Builder Weed & Feed | 538-328 | 2,4-D DMA salt 0.95% plus 2,4-DP-p and MCPP-p | "until sprays have dried" |
How pets get exposed
NPIC lists three routes: touching grass still wet from spraying and then grooming, drinking the product, or possibly eating treated grass.
Why dogs specifically
NPIC states dogs may be more sensitive to 2,4-D than other animals. Separately, NPIC says granular lawn products may require keeping pets off 24 hours or longer.
Signs of exposure
From NPIC: vomiting, diarrhea, loss of appetite, lethargy, drooling, staggering, or convulsions in dogs and cats that ate or drank 2,4-D products.
Cats and kids
Cats that go outside are exposed the same way, through paws and grooming. For kids, NPIC says that while children may be especially sensitive to pesticides in general, there are no data showing children are more sensitive to 2,4-D specifically.
Groundwater note
The Scotts granular label says the chemical has properties associated with chemicals detected in groundwater. It says application around a cistern or well may result in contamination of drinking water or groundwater, and that applying when rain is not predicted for the next 24 hours helps keep the product in place.
Questions people ask
How long should dogs stay off grass treated with 2,4-D?
Follow the product label: the Scotts granular weed and feed says until dusts have settled, and the liquid version says until sprays have dried. For granular lawn products in general, NPIC says pets may need to stay off 24 hours or longer. The label is always the minimum.
What signs should I watch for?
NPIC says dogs and cats that ate or drank 2,4-D products developed vomiting, diarrhea, loss of appetite, lethargy, drooling, staggering, or convulsions.
Sources
- EPA label, Reg. No. 538-333, accepted September 17, 2026. Checked November 4, 2026.
- EPA label, Reg. No. 538-328, accepted January 10, 2025. Checked November 4, 2026.
- NPIC: 2,4-D Fact Sheet (reviewed March 2009). Checked November 4, 2026.
- NPIC: Pesticide Use Around Pets (updated April 14, 2026). Checked November 4, 2026.