Either send the unopened product back or use it and take the initiative to continue the log even though you met the end of the agreement. If it's a product that has a protocol of let's say one month on and month off then wait a month and carry on with the log. If there's no desire to continue the product ask whoever gave it to you if you can give it another user to log it and review it as well.I'm curious to see how users/reps feel about this.
Should a person that was given the opportunity to log a product, and sent two months worth, auction off the second month's worth even though they are only required to log for 1 month.
Auctioning or selling product that was given to you isn't cool...that's just my opinion.