Roundup... (2-4-5-T?) Works every time. Them dead spots in the lawn only last a couple years, A year longer than dog-chit, but those yellow bastids are GONE. Mostly I use it on peripheral stuff- like on the gravel driveway.

Don't do it near the lilac bush or anything important- wife did. After 5 years, the thing is starting to look like it might live after all....

Wee-b-gone doesn't kill the grass, but works slower. Sometimes takes a couple shots a few days apart.

Fighting dandelions is like fighting ISES.... no end to it.

The only true cost of having a dog is its death.