Childcare Needed - Full-time / Part-time

We are looking for a babysitter for our two young boys (2 yrs old & 8-month-old) for mostly evenings but the occasional day job during the weekends this summer. This would be at our lake house so we just need to make sure water safety is super important. The kids wont really be going in the water but our house is on a lake so just want sitters to be aware.