How do you know the battery is flat in the Goodnature Mouse Trap?

The Goodnature Mouse Trap will indicate that it is nearly run out of power by the light on the top of the trap flashing red. Please note that the trap is still able to fire when it is flashing red.

To charge the trap, just take the USB-C cable that came in the box and plug it into the trap and an outlet. Your trap will then enter Safe Mode (as indicated by the light changing colour to white) and begin charging.

You can find more information on what the different light colours mean here.