Are the strains in Smidge Sensitive Probiotic and Infant Probiotic strep free? Gana Wilson Updated August 15, 2020 13:45 Follow Yes, the strains in Smidge Probiotics are completely strep-free. Related articles Should I be rotating my probiotics (every month, every 6 months, etc.)? I left my probiotic outside of cold storage overnight, is it okay? What are Smidge probiotics cultured on? Is it a rainbow? 0 comments Please sign in to leave a comment.