I would also suggest placing an ad in the paper. I know that where I live it is almost impossible to find reasonable child care and nobody wants to do it part time so my husband and I work opposite shifts. I work 6-2 he works 4pm to 12:30am. I was quoted $660/month for six hours a day of child care only.
I have two kids and I won't even make the $1200/month at my job to pay for it. I work for peanuts, just so my kids don't have to go to child care. I am getting off topic here, but place and ad and check references and do a background check with police dept and also check DMV records if they will be driving. I would also suggest a 30 day trial run, if you don't like them you can let them go. Good luck!!