Dirty jewelry especially earrings will lead to an infection, so regular maintenance is advised. Ear piercings are extremely sensitive and can easily trap grime if not cleaned properly. Of course taking your earrings to an expert would be the best solution, but if we could do it ourselves why not right? So let us begin.
First, grab a yourself some Rubbing Alcohol / Hydrogen Peroxide / another sanitizing solution that may have been issued to you , a Bowl, some paper towels and a tooth pick (Wood so it don't scratch your lovely earrings).
Take your metal earrings and place them in the bowl, please do not put your pearl earrings and precious metals such as gold, silver, platinum, etc.. in here. Soak the earrings in Rubbing Alcohol / Hydrogen Peroxide, for about 10 mins.
Remove the earrings and place them on a paper towel to dry, and if you still see any grime. Use a toothpick to remove them, being made of wood you need not worry as much about scratching your metals.
EMERGENCY QUICK FIX TIP
In cases when you're about to go out and don't have time to wait 10 mins, what do you do? Obviously, you don't want to go out with earrings that smell like they've been stashed behind a dumpster of a bar.
Grab the some Alcohol swabs, rub them earrings clean, pat them dry and you've got your quick fix. Just remember to clean them when ya get back, cause it ain't completely cleaned. But they clean enough.
Now moving on to Pearl earrings. No Alcohol, No Hydrogen Peroxide. Take some tissue or cotton balls, warm water, and paper towels. You take the cotton ball dip em that warm water you got, then wipe the pearls clean.
That's not all, if it doesn't remove the grime take some delicate soap, something like hand soap and add it to the cotton. Wipe gently, and quickly wipe off the soapy mixture with warm water. But if it still don't work, you can soak them in warm water for up to 5 mins max. Then pat them dry with a paper towel.
Earrings with Precious stones, with gold and silver settings should be cleaned with a slightly different approach.
Get some rubber gloves, because you'll be handling Ammonia, and a bowl. Toss in a cup of warm water, add 1/4 cup of ammonia and stir that mixture up. Put the earrings into the mixture and let them sit for 15-20 mins.
Now remove the earrings from the mixture, be careful not to get any of it on yourself, then swirl them in a bowl of warm water & dish soap. Now you can take your jewelry brush, or a soft toothbrush and scrub away at the crevices which accumulate the most grime.
When that's done, toss em in another bowl of warm water. Rinse them well, and drop the earrings on a microfiber hand towel. They're soft and absorbent. When they're all dried, polish those earrings up and you're good to go
For metals like Silver which will appear old when they aren't cleaned with a specific method, you could use this product, it works for most gold and silver jewelry.