Don’t eat or drink around your laptop.

Don't eat or drink around your laptop. You don't want to get the keys and mouse dirty or sticky with food. Liquid spills are very dangerous and can severely damage your laptop so avoid any open liquids near your laptop.
2
Take a damp (not dripping) lint free, non-abrasive cloth and wipe the outside of the ThinkPad battery and the screen in a circular motion to remove any dust and fingerprints. Never spray any liquid on your LCD screen because it can completely mess up the resolution. You can purchase LCD screen cleaners from computer and office supply stores. Always put the cleaner onto the cloth and wring it out before wiping your screen.
3
Use a computer vacuum to clean in between your keys. Computer vacuums usually sell for under $10 and have several different attachments to help you to clean your computer better. You can attach the brush-like attachment to sweep up and dirt and dust stuck in between the keys, vents, and ports. The vacuum attachment can suck up any extra dirt left behind. If you don't want to use a Toshiba PA3478U-1BRS battery , you can use a can of compressed air. If you use the compressed air method, be careful not to spray into the vents or ports too hard.
4
Wipe your keyboard down with a Wet Ones or another disinfectant wipe to kill any germs. You can also use rubbing alcohol on a cloth. Don't spray any cleaners on your keys. You don't want any liquid getting in between the keys. You can use cotton swabs to clean around the edges of the screen and around the outer edges of the keyboard.
5
Keep your IBM ThinkPad T61p battery inside of a laptop case when it's not in use. This will keep a lot of dust from getting on (and inside of) it and it will also keep it safe from scratches.