Dota 2 – Can the Bounty Hunter’s Track Be Purged?

In the "Learn" tab on the menu you can view all of the current heroes. Each hero has tags assigned to it, such as carry, disabler, initiator, jungler, etc. Among those tags are also "melee" and "ranged". You can choose to set an attack type filter on that menu, or during hero selection in a game, to show only ranged heroes.

Each time you or your teammates deal any damage to the enemy creeps (in this case by last hitting them) you slightly help your creep wave to push the lane towards the enemy tower.

The best place to farm is slightly in front of your towers range of attack,so you are close to safety but without tower interfering with the creeps.

To get creeps to fight there you will have to block your creeps movement as much as you can and then actively hit and deny your creeps as soon as they get under 50% HP to help enemy creeps push the lane closer to your tower.

Once you get the creeps to fight in that spot,in order to maintain that place each time you hit the enemy creep you should hit or deny one of your creeps too. This is known as maintaining lane or creep equilibrium.

There is also a chance that some invisible or hiding enemy hero is there trying to get EXP