The arrow poison frog is only a problem for the animal unlucky enough to try and eat one. Okay, so this one was sort of a joke. But the bullfrog has been a problem in other parts of the world. In the western United States this species may be contributing to the decline of some frog and fish species. No, this is the worst thing you could do.
Storm drains empty into the nearest stream, river, or lake.
Right into the local frogs' backyard. Please do not try this. Many service stations will recycle your used oil. If not, try the local dump or recycling center. Just keep it out of the storm drain - they empty right into the local frog habitat.