Originally Posted by Spastic_Dove
Baby wipes are usually gentle enough to work. Otherwise I would just use a sponge with warm water.
In Portugal, baby wipes can have some harmfull products to the eye, don't know about it there, so to keep it safe you can use:
1 - a clean cloth or sponge with water (it should be warm, but cold does't hurt)
2 - clean cloth with saline solution.
They're both safe, and work like a charm. But if the duct is clogged, it is wise to get it fixed, 'cause after some time untreated it might cause infection and that is really nasty. ;)