New answers tagged ceramic-tile
Pull them out with pliers or tap them out with a chisel/pick/flat screwdriver and hammer. Most of the time if you clamp them with pliers and wiggle they will come out.
They make a liquid nails that is formulated for tile - I just used it to hang soap dish and toilet paper thing on my tiles. I have no idea what you are trying to do (picture would help) but that answers the title. You do not want to use any type of silicone for this - you need rigidity.
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