ADAPTILJunior Adjustable Collar for Puppies Under 35 Pounds

I ordered the 2 pack of the adaptil puppy collars and both of the expiration dates were from a month from now! So I can only use one out of the two because the second one will be expired by time I get to use it as each collar lasts for one month.But in my case, I ordered these in 4 months advance for my future puppy. So I can't even use both.

Great