Water puddled from grade depression. These areas should be dug up and full depth patched.
Dumpster areas. In an area that has failed to be designed properly, the pavement should be reconstructed from the ground up. Water seeping up through crack on a dry day. This may indicate drainage problem under the pavement.
What are alligator spots?
Sawing out patch is necessary and highly recommended because you can remove all deteriorating asphalt. Also it will create sound material to provide restraint against movement of the patch. Hot mix is the best option, although if you are on a budget we offer overlay patches.