DB_Auto_Discovery_SQL_Server Agents

Hi,

I get several (hundreds) Idle Agent alerts per week telling me:

Agent DB_AD_SQL_Server_srv-sql_XXX (Dbwc_Common_SQL_Server_AD_Agent) has been idle for more than 168.00 hours.

It's my understanding that this agent is only needed when discovering new instances, correct?  If so, does it add them automatically?  If not, is this agent really even needed and can it be safely disabled or deleted?

Thanks much,

Paul