if they are little round balls, and taste slightly sweet, you're fine; the plants produce honeydew when they're happy. it can attract ants though (which can bring in other bad things), so you might want to stick the plant under the faucet periodically and rinse the honeydew off. (and don't get it in your hair. i'm just sayin'... ;)
however, look closely for bugs, as some types of insects (which types escapes me at the moment) exude sticky glop, and you don't want them on your plants.
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--j_a