Yes, Spectracide is dangerous for consumption by dogs.  Spectracide is an organophosphate-based insecticide. This complex compound is famous for causing nerve and respiratory damage in insects and pests. Insects die very soon after coming in contact with this compound.  This compound can also have a similar impact on cats and dogs. You might also experience this damage in humans if exposed to this compound for a long time. Organophosphate can affect many organs simultaneously, so you should be very careful while tackling this compound.