I was sealing in the bathroom and put down the cartridge gun but some silicone leaked out the end. I thought I wiped it up straight away but there is a stain on the floor tile. We chose tiles with a bit of a relief so they would not be too slippy in the wet and I think perhaps the silicone has got stuck in the rough surface. I have tried some of the silicone softener removal stuff but it hasn't completely worked. Is this the best answer? Should I persevere with this or try something else?