On-Call Babysitters Needed For Two To Three Days At A Time - Full-time / Part-time

I am a single parent and occasionally travel on business. I need to have 3 to 4 caregivers that I can call on who may be able to stay with my 3 teenage kids for two to three days at a time. You would have ample notice before I go out of town. I am looking for caregivers that would have to have a car for after school pick up. Meal preparation and cleanup would be necessary. Driving to practices, lessons, and doctor's appointments may be necessary as well. Ideally, I am looking for females who are at least 21 years of age. If you would be interested in being on my list of caregivers to call, I will be interviewing those that respond.