Due to the manufacture's restrictions we are limited to 30 days for accepting returns on all bird products.  For all other products the 60 days policy applies.

These combination Ultrasonic/Sonic device work very well.  They provide the distress language and the very irritating harassment sounds in the same unit.  The surround sound technique really spooks the birds.  

The birds will hear the chilling cry of a hawk attacking it's prey out of one speaker.  Then out of another speaker they will hear in the voice of one of their own species saying "Holly cow I just heard a hawk attacking somebody,  we better get out of hear".  Then out of another speaker "Wow, I hear it too--> we better hurry.  Then another speaker will blast them with a very loud ultrasonic sound warble of various frequency and intensity but  (Silent to humans).

All bird repelling device work better when used with the visual scare devices like the Terror-Eyes   irri-tape or the  Prowler Owl.