If you have ever had roaches in your house, you already understand that they are dirty pests that are extremely hard to remove. The best way to deal with roaches is to keep your house clean to keep them from coming in. You can clean up a house and rid yourself of these pests, but you must be very thorough and willing to do the work.
Clean your yard. Remove any sticks and brush and trim any bushes so they don't touch your house. Clean up any and all trash. Mow your lawn and keep the grass short. Empty your trash cans often and clean them out with soap and water and don't let liquids accumulate in them.
Empty your house. Roaches are invasive and hide in and under everything because they don't like the light. They can and will hide in any dark place, especially if it's wet or moist. If you really want to clean out the roaches, you need to empty your house as much as possible before you start your cleaning.
Remove all your food. You should probably start by throwing out any food that is not sealed airtight when not in use. Not only will this food continually attract the pests, it's probably already contaminated. Roaches can spread salmonella and other diseases. Now if there is anything left in your house you need to go top to bottom to remove any crumbs or remnants of food anywhere in your house.
Seal your house. Caulk or seal all your windows, door and cracks. Use weatherstripping where possible to seal up your house to remove easy entrance for the bugs to use.
Keep your house dry. Roaches like places that are moist, so pay special attention to the areas in your house that are or can become moist. Fix any leaks in your sinks or bathrooms and throw out any rags.
Bomb the place. Usually the only way to fully clean the house of roaches is to use a bomb pesticide. It's best to do this with an empty house. Leave the house for a few days and make sure you follow all safety precautions. Come back and clean up any roaches and remove them. The bug bombs can leave an oily residue and a smell, so wipe down everything, including the walls. Clean the windows, wax the floors and sweep and dust until everything has been cleaned. Open the windows and let the place air out for a few hours. Set traps to catch any roaches that survive. If possible, wait a few more days before returning.