it all depends on where the piercing is, and if your allergic to any medicines.
the best way to go would be salt water, peroxide, rubbing alcohol, or you can get piercing soap.
pull pin out and disinfect
Shake them out well and launder them twice.
Get in the shower and wash the piercing using diluted liquid antibacterial soap, rotate or shuffle the jewellery (depending on what you have in the piercing a ring or a barbell). Then with running water rinse the piercing out while moving the jewellery. Exit the show dry the piercing using a clean towel and leave it alone till tomorrow when you will wash it the same way again. Do not use anything other than the above listed soap and water on the piercing. Once the piercing is clean keep your dirty hands off it, you need to wash your hands before you touch the piercing, that's how they become infected in the first place 9 out of 10 times.
It's important to disinfect your hands and the ear - you don't want any germs getting down deep inside the ear tissue.
You need to follow the written aftercare instructions you were provided with at the time you got your piercing done. If you have aftercare questions contact your piercer.
The best way to know if your new piercing is infected is by the visual appearance. If the piercing is red or inflamed, it may be infected. It also may be hot to the touch.
saline soution is the best way to starilize any piercings.
Depending on what has been inside them, an antibacterial spray such as Lysol will be the best way to get rid of germs. For common household garbage smells, washing it with soap and water and allowing it to dry completely would be the best way to get smells and scents out of plastic.
you shouldn't use alcohol to clean any piercings. You can use alcohol to disinfect your jewelry but not the piercing itself. It dries it out.
Nose piercing
Yes, but if you are unsure how to change the jewellery best to go see your piercer and have him/her show you the correct way to do it without hurting your piercing.
piercing and high-pitched in sound answers.com is the best way to show and answer your question and she is correct