I bought this in the summer and tried one tablet around August, but it was difficult because my dog wouldn't stay still in the bath. It's been opened, but I intended to use it at the time, so I closed the lid tightly and stored it in the living room. I hope someone who understands this will use it. Would you like to try it? Thank you. - Product Name: Grooming Tab - Purpose: Dog bath additive - Features: Organic-free, fragrance-free - Made in: Japan Thank you for looking.