Bell Laboratories Trapper T-Rex Rat Trap (2 Traps)

What is the difference between this product and the Trapper T-Rex that is more expensive?

Catches rats easily but all of a sudden it's attracting birds! (It's in my lemon tree.) What can I do to discourage birds?

Read a bunch of 2-year-old reviews about plastic quality and breakage. Is this still an issue?

Has the manufacture fxed the low quality plastic issue because i do not want to buy if it malfunctions