Trail Chasers Blue 6 Inch Package of 25 Whisker Garden Marker, Survey Marker, Landscaping Package of 25 Blue 6" Trail Chasers Trail Chasers are perfect for marking your planting beds. Trail Chasers are durable and highly visible ground markers. Flexible Whiskers will rebound after being crushed. Trail Chasers are easy to deploy, easy to move, and easy to retrieve.