An inactive host that does not contact the Falcon cloud will be automatically removed from...

An inactive host that does not contact the Falcon cloud will be automatically removed from the Host Management and Trash pages after 90 days. An inactive host is a host that has not communicated with the Falcon platform for more than seven days. An inactive host will be moved from the Host Management page to the Trash page after seven days of inactivity. An inactive host will remain in the Trash page for 90 days before being permanently deleted from the Falcon platform. You can restore an inactive host from the Trash page if it becomes active again within 90 days1.

References: 1: Falcon Administrator Learning Path | Infographic | CrowdStrike