"hello, Mr. MD Koay.......Just browse through your web on the above......wow, interesting and amazing, Great!I/we need your advice on our newly built swiftlet housing of 24 x 80.Everything seems to finalise except the sounds, CD and effects on swifts attractionsare bothering us.We do not know what to do for the best accomdation of the swifts, please advise..........Mr.T" . . . .