My floor liners went in without a hitch, and stay put, unlike floor mats. They cost more, but being made in America makes it worth it. I have had these in a 2013 Ford C-Max, 2014 F-150, and now a 2014 Focus. They all work as designed and advertised. The carpet will never wear out with these on the job.
I have used WeatherTech Extreme-Duty DigitalFit Floor Liners in my Honda Pilot for two years, so when adding another vehicle to the family it was natural to get the same for the new car. I very much like the fit of the floor liners. Their deep profile really helps keeping fluids (water, coffee, soda, what ever) from spreading in the car. They are a little expensive but the fit and quality makes it worth it.