Ants are known to mark their trail so that other ants may follow: you might call it pheromonal warfare. Many animals mark "their territory" by leaving a scent, but ants mark their trail.
The word is odour or odor. It means the smell or scent.
A pheromone scent trail.
The child dragged his toy truck across the room, leaving a trail of marks on the floor.
They leave scent marks.
They begin to circle at the last scent and move in ever widening circles until they either recover the trail or give up on that trail.
Use scent mode to find a trail of yellow dots and follow the trail.
This is because ants leave a chemical trail for other ants to follow.They are following a trail laid out by another ant that will take them to food, water or their home. Ants leave this trail of pheromones or scent as they travel. After finding food they return to the nest (following their own scent trail) and communicate this fact to other ants who then follow the scent trail to the food. As more ants travel the trail the scent gets stronger (easier to follow) and the random bumps are smoothed out making the trail straighter.
When a dog scuffs the groung with its back feet, it is marking territory or asserting itself to other dogs by leaving behind scent from glands in the paw pads and leaving marks on the ground. This is sometimes done shortly after it has marked territory with urine and or faeces.
It uses the scent trail to find the dead prey. The tongue of the snake picks up scent particles from the air or ground and transfers them to the Jacobson's organ in the roof of the mouth,
A pencil works by leaving a trail of graphite on paper as it is dragged across the surface. The graphite in the pencil is soft and leaves a mark when pressure is applied, allowing for writing or drawing.
after his 6 month trail
The Oregon trail was a 2000 mile long string of rivers and national land marks.