2 of 2 people found the following testimonial helpful.
Posted By: Elm Creek Range (FREEDOM, OK) Apr 25, 2011
We have used DuFlex tags for years. Their retention span is normally at least 4 to 6 years with some lasting longer. 90% of failures are with the stud, so we are going to start replacing the studs at 4 year intervals. I think the tag itself will last many years. These are the best tags we have used to date.