We have used sentinel before and it worked to get rid of a mild flea problem (here in TX) and keep them away. Dawn only kills the adult fleas, not the eggs or larvae, but it works best as long as you don't have flea issues in your home. We also used this milky dip stuff that we bought at our feed/supply store that is mainly used for mange, can't think of the name of it though.
I lift my eyes unto the hills, Where does my help come from? My help comes from the Lord, The Maker of Heaven and Earth. And I'll praise You in this storm and I will lift my hands, For You are who You are no matter where I am, And every tear I've cried You hold in Your hand, You never left my side and though my heart is torn, I will praise You in this storm