University San Marcos 17. oz. Supreme Water Bottle. Show your California State University, San Marcos pride all year long with our authentic assortment of California State University, San Marcos collegiate apparel - including California State University, San Marcos t-shirts, sweatshirts, hats and more.
When the Bird Daylight Laser 200 emits a powerful green light that hits bird feathers, it makes a bright splash of light. Which traumatizes them and they can't fly away fast enough. A flock of more than 100 geese immediately took flight..
Sound bird deterrents use birdsâ instincts to scare them away from large open spaces. Recorded bird-distress calls are broadcasted along with predator bird calls; when birds hear these sounds, their natural instinct is to flee the area. Birds hear sounds in the same range as humans. This makes sound producing Super Sonics the only effective choice for electronic sound deterrents.