... HC8528 - Main function: cleaning, degerming, fragrant, deoderizing. 50g x 2 blue bubble toilet / lavatory / bathroom cleaner - Net weight: 50gx2- Gross weight ... , degerming, fragrant, deodorizing.- Expirty: 3 years.- Usage: 1. Get the blue bubble cleaner from the paper, put into the water tank ... fixed at the bottome of water tank.2. When the blue color turns lighter, the agent should be replaced by a ...