I just installed ceramic tile in my laundry room and used non-sanded grout. When the job was done, I used the Aim and Seal grout sealer, by TileLab. I really liked it because it was so much easier to use than the liquid TileLabl SurfaceGard Penetrating Sealer I had used before.
I loved that this stuff came out in a foam. It was easy to control and fast to apply. The other grout sealers I've used in the past had to be applied with a sponge and were so messy. With the Aim and Seal, you just aim and push the nozzle. You don't get anything on your hands and hardly any missed the grout. One can only does a small area. I was able to get most of my laundry room done with one can, though. My laundry room is about 80 square feet.