According to the Chicago Rabbinical Council, (cRc), at the beginning of May 2020, the cRc issued an alert about a seasonal increase in infestation in blueberries and are now happy to inform the public that the infestation has subsided to the point that one no longer needs to wash with soap. All that is needed is to wash the blueberries well in water. The cRc anticipates this low level of infestation will end in early April so the water only rinse should not be used past April 1, 2021. The one exception to this is ORGANIC blueberries, which should be washed and checked using the thrip-cloth method, available on their website www.crckosher.org.
Some products from Fruidles, the Dreidel Co. show an unauthorized Kof-K on the package. The Kof-K does NOT supply Kosher certification to this company.