How long should I have the same recycling kit? June 15, 2023 15:16 Updated Due to the presence of moisture in the coffee/espresso grounds, we recommend sending in the bag every 6 weeks. Related articles How many espresso capsules does the recycling kit hold? Are Peet’s capsules recyclable? Can I put other brands of aluminum capsules in the same recycling bag? I thought single serve coffee products were not recyclable. How does the program work? Where is the recycling program available?