I paint mine on with slightly water down piping gel, very thin. Or mix a little of your disco dust in with a little water and piping gel, and use a nice soft brush, artist brush and paint on. Its beautiful. I've done this many times. I love elegant bling. Good luck 
Disco Dust is finely ground plastic. It is non-toxic, but NOT edible. It's meant to be used for decoration only--for use on items that will be removed from the cake before eating.
Rae
I used it on my tiered star cake and not one person got sick. I was told about Disco dust by another bake who likes sprinkle it on her cakes like pixie dust. I have used it several times and never had any problems. Same thing with Luster Dust it contains metals and is non toxic. Might try doing a search and read what the manufacturer has to say and make your decision. All I know is I will continue to use Disco dust I love it.
Why don't you use silver fondant glaze. I used it to paint my football helmet. Fondantsource has it for 2.49. You need to make sure to let the glaze dry for thirty minutes before putting on a second coat.
Might try doing a search and read what the manufacturer has to say and make your decision. .
I didn't sit around trying to figure out a way to bankrupt the makers of disco dust 
I have read manufacturer's/distrubutor's recommendations and they state that Disco Dust is non-toxic and should be used on non-edible decorations:
Sunflower Sugar Art Disco
Use on non-edible decorations. Non-toxic.
From 2 suppliers websites:
"An extra-fine glitter that catches the light just like a disco ball, giving your baked creations a jaw-dropping sparkle that is sure to impress! Looks fantastic lightly sprinkled onto frosted cookies and cupcakes. 3 grams per jar. A little goes a very long way, you will get a lot of use out of this jar!
Non-toxic. Made in the USA *Please note that these dusts are not a food product and should not be considered as such.
A nice way of saying NOT EDIBLE.
Plum Disco Dust
Add some real pizzazz to your culinary masterpieces! These beautiful and dazzling colors will enhance any and all of your ideas! Add to the icing while wet. Made in the United States. They are classified as "non-toxic for decoration only". The weight is listed as an approximation per the packaging label.
As for luster dusts, there is now available FDA approved dusts that ARE FOOD PRODUCTS AND ARE EDIBLE. Crystal colors (sugarpaste.com) makes and supplies them. They are wonderful, and the silver pearl gives excellent coverage.
Will someone "get sick" if they eat it? Probably not, but because the supplier's and manufacturers have taken the precaution of stating that it's not edible and should be used for decoration only, if someone does get sick, then it's the decorator who becomes the one who must defend the choice to use the product inappropriately.
Rae
Quote by @%username% on %date%
%body%