Luv N' Care, LTD Issued a Nationwide Recall of all Nuby Gel Filled Teethers and certain UPC Codes of Cottontails and Playschool Teethers. These products have been found to contain Bacillus subtilis and Bacillus circulans in the gel. These bacteria generally do not cause illness. However, the bacteria can affect children with weakened immune systems, causing stomach pain, vomiting, and diarrhea, if the teether is punctured and the liquid from the teether is ingested.