Most of the children start at my daycare around 10-12 months of age and currently my group has 3 that are between that age and 3 year old. Getting everyone bundled all winter takes 1/2 an hour and the time it takes me to clean up snow/slush/mud after we come back in is at least another 1/2 an hour. If I were going on a school run with these children it would take up too much of my day. Fortunately, I'm not close to a school.

If you don't want to go through all of that then make it clear that you can't offer that service while in the prescreening stage. I wouldn't put it on your website or in your ad though because you want all positive things in those two places. You have a perfect right to choose how you are going to run your daycare.

Bluerose gave you great advice!