Share 'What to do with dogs while working?'

My husband and I have been on different work shifts since we have had our 2 girls. They are only in their kennels for about 4 hours before one of us gets home. Problem is my husband is going to day shift so we will have the same hours. There is no way we will kennel them for 10 hours. We are thinking of automatic dog door for patio slider (we rent a house) but they are sooo expensive! We wanted i…