Housekeeper Job in Bellingham, Washington

Hi, I am looking for an efficient and reliable housekeeper. My home is a busy place. My husband and I have five young kids. We live in a 4 bedroom, 4 bath (3,000 sq. ft.) home that's three stories. As you see this house is tiring me out to clean on my own. I am a full-time mom, so I do keep up on daily chores (dishes, laundry, general pick-up). I am looking for someone to do the deeper cleaning such as: scrubbing showers, toilets, wash kitchen/bathroom floors, polish sinks, wipe out refrigerator, wash sticky finger prints off walls and handrails, oven cleaning, dusting). As the kids get older and our schedule gets busier (we love to entertain!) the deep cleaning is getting more difficult to keep up. We have no pets, so that helps. Efficiency is very important, since this is a bigger home and I don't want to spend a fortune. I would love to have someone come twice a month. I will do my best to have the house tidied up and make myself scarce so you can get to the deep cleaning right away. If this sounds like the job for you please let me know your bid and experience. References are requested. Thanks.