NO
I have used a low dose Sevin dust on our outside dogs before and it worked well with no side effects.
Jacques Sevin was born in 1882.
Jacques Sevin died in 1951.
Sevin Okyay was born in 1942.
Sevin Sins was created on 2010-04-13.
Sevin Rosen Funds was created in 1980.
Pierre Saint-Sevin was born in 1695.
Pierre Saint-Sevin died in 1768.
The information I have on Sevin says 7 days.
at Home Depot you can get 32 Oz. Sevin Bug Killer Concentrate for $13.99 or 1 Lb. Sevin Insecticide 5% Dust Canister for $4.97
The warnings on the Sevin container say to wear gloves when handling it, and use caution using around people pand pets. So yes, it is likely to be harmful to dogs.