Help!!! My kids are destroying the house.

I believe that single handedly my children ages 7 &3 are going to destroy my house. The house has been here since the mid 80s, made of brick, a very hardy house. Though I do believe that these kids are going to give it a run for its money. By no means is this my "dream" home or the house I see myself in 10 years still living in. My husband being in the military we just moved back to this area a year ago and decided, NO MORE NAVY HOUSING. Mimi, knows what I am talking about! So we bought our first home. 3 bedroom, 1/2 acre lot, 1500 sq ft. I am constantly cleaning this beast. It is all one level which I am so thankful for, but there is always something that needs to be done. Of course God has blessed me with sons so I am always cleaning up pee in the bathrooms. I cant say that my husband is any better. I have a solid plate glass storm door that is always covered in nose and hand prints, and my garage is a catch all for everything. It is very sandy here so they are constantly tracking in sand and I am constantly using the carpet cleaner which I do not think is making a difference anymore. There are always sprinklings of food on the floor or toys. Hot Wheel Cars hurt in the middle of the night. As much as I set the rules and keep the toys contained to one area it just seems to happen the opposite. I am starting to believe that there are little trolls that come out and party while I am out running errands. Laundry is the story of my life, I fold it and put it all away just because if I dont it is shoved everywhere. My oldest son sleeps on the top bunk and it is like his own fortress, he has so much junk up there that I am surprised that he does not have unwanted visitors. I can fill a whole washer with his clothes up there. Although I have heard if you have a clean house you live a boring life, my life is far from boring.