National Advertising Division Finds Certain TerpLoc® Cannabis Packaging Claims Supported; Recommended Grove Bags Modify or Discontinue Others
New York, NY – May 14, 2026 – In a challenge brought by Calyx Containers, LLC, BBB National Programs’ National Advertising Division recommended that Kinzie Advanced Polymers, LLC, d/b/a Grove Bags, modify certain express and implied claims for its TerpLoc® cannabis storage products.
Calyx Containers and Grove Bags compete in the cannabis packaging industry offering specialized, high-performance storage solutions designed to preserve product quality. At issue for the National Advertising Division (NAD) were advertising claims across multiple media channels related to humidity control, weight retention, and terpene preservation for Grove Bags’ TerpLoc® cannabis curing and storage products.
NAD found that Grove Bags’ internal testing and independent third-party studies provided a reasonable basis for claims that TerpLoc® packaging functions as an effective passive modified atmosphere packaging (MAP) system that maintains moisture stability and preserves cannabinoids and terpenes better than conventional storage methods when following product use instructions.
However, NAD determined that the moisture stability and terpene preservation claims are expressly dependent on specific conditions of use and found that the evidence does not directly establish that TerpLoc® packaging consistently maintains a precise relative humidity range of 58–62% under all conditions.
NAD recommended that Grove Bags modify its advertising to clearly and conspicuously disclose the conditions under which the claimed results can be achieved and to avoid language suggesting guaranteed or universal performance.
NAD also determined that the ads, in context, do not reasonably convey the challenged implied message that Grove Bags regulate the relative humidity to the claimed level, no matter the level of moisture of the product when placed in the bag.
NAD found that the product’s instructions for use are material terms that must be clearly and conspicuously disclosed in close proximity to the performance claims. NAD found that the challenged claims without qualification, that the bags will “create” a specific microclimate to achieve the advertised relative humidity (RH) or that the bags “ensure” weight retention and terpene preservation, were not supported.
During the proceeding, Grove Bags voluntarily discontinued claims related to mold prevention. These claims will be treated for compliance purposes, as though NAD recommended they be discontinued.
In its advertising statement, Grove Bags stated, “it will comply with NAD’s recommendations.”
All BBB National Programs case decision summaries can be found in the case decision library. For the full text of NAD, NARB, and CARU decisions, subscribe to the online archive. This press release shall not be used for advertising or promotional purposes.
Calyx Containers and Grove Bags compete in the cannabis packaging industry offering specialized, high-performance storage solutions designed to preserve product quality. At issue for the National Advertising Division (NAD) were advertising claims across multiple media channels related to humidity control, weight retention, and terpene preservation for Grove Bags’ TerpLoc® cannabis curing and storage products.
NAD found that Grove Bags’ internal testing and independent third-party studies provided a reasonable basis for claims that TerpLoc® packaging functions as an effective passive modified atmosphere packaging (MAP) system that maintains moisture stability and preserves cannabinoids and terpenes better than conventional storage methods when following product use instructions.
However, NAD determined that the moisture stability and terpene preservation claims are expressly dependent on specific conditions of use and found that the evidence does not directly establish that TerpLoc® packaging consistently maintains a precise relative humidity range of 58–62% under all conditions.
NAD recommended that Grove Bags modify its advertising to clearly and conspicuously disclose the conditions under which the claimed results can be achieved and to avoid language suggesting guaranteed or universal performance.
NAD also determined that the ads, in context, do not reasonably convey the challenged implied message that Grove Bags regulate the relative humidity to the claimed level, no matter the level of moisture of the product when placed in the bag.
NAD found that the product’s instructions for use are material terms that must be clearly and conspicuously disclosed in close proximity to the performance claims. NAD found that the challenged claims without qualification, that the bags will “create” a specific microclimate to achieve the advertised relative humidity (RH) or that the bags “ensure” weight retention and terpene preservation, were not supported.
During the proceeding, Grove Bags voluntarily discontinued claims related to mold prevention. These claims will be treated for compliance purposes, as though NAD recommended they be discontinued.
In its advertising statement, Grove Bags stated, “it will comply with NAD’s recommendations.”
All BBB National Programs case decision summaries can be found in the case decision library. For the full text of NAD, NARB, and CARU decisions, subscribe to the online archive. This press release shall not be used for advertising or promotional purposes.