Published: Sep 15, 2012 7:18 PM EDT

FORT MYERS, Fla. -- Your most precious cargo may not be properly secured in the back of your car. Statistics show 75% of all car seats aren't properly installed.

Saturday morning, the Fort Myers Police Department teamed up with Safe Kids of Lee and Collier Counties to provide a free child's seat check for the community.

"I wish it was easy just to throw the car seat into the car," said Officer Lesa Breneman.

"But with all the different manufacturers of car seats and cars, along with airbags and seat belts...it is not easy."

The most common mistake parents make is that the seat moves too much.

"I've had some people come in and it moves 3 or 4 inches, but still, in an accident that's an extra 3 or 4 inches," said Charlene Gardner with Safe Kids.

Even a minor accident can be deadly in that situation. Case in point, a wreck on Fowler Street last February should have been a simple fender bender. But because two-year-old Eva Daghra wasn't properly restrained, her car seat was sent flying into a deployed airbag. Her mother Monique is charged with negligent homicide and is awaiting trial.

You can get your car seat inspected anytime at your local law enforcement or fire department. Most hospitals also offer the program.