The old adage “Stash it, don’t flash it” could be the best advice for people unpacking their new Christmas presents.

Those who received electronics or other expensive and thief-attracting items should ensure that the boxes are not visible in their trash or recycling bins when they are placed at the curb.

“Police recommend using caution when putting out boxes from new items, especially electronics like iPads and flat-screen televisions,” city spokeswoman Debbie George said.

“Empty boxes at the curb after the holidays could alert thieves to new and highly coveted items waiting inside.”

Police recommend breaking the boxes up and placing them in your trash or recycling bin, George said.

“It’s safer, and picking up a box inside your refuse can doesn’t count against your yearly allowance of free bulk pick-ups,” George said.

When putting boxes into their trash can, consumers also should put the boxes inside black trash bags so a passerby cannot lift the lid and snoop on new electronics.

Residents also should remember that flattened cardboard boxes are recyclable through the TFC Recycling cans, but will be rejected from the recycling system if they are in a plastic bag.