I recommend buying additional blocks of soap. Very good quality! for those who are especially economical, after the end of the block, you can drill holes and pour ordinary soap with a ratio of water three soap one  but I don’t recommend doing this very often ordinary liquid soap diluted with water freezes and the device stops working  Has some pros: Makes foam  very pleasant and gentle to the touch the soap that comes with the kit is very well washed off with water there is no feeling of soapy hands very convenient to use if you have to wash your hands very often during the day  Cons below: Batteries last about a month if you often wash it is decided to replace it with rechargeable batteries 
4011B ORB Version: Premium 🚰 Bathroom Faucet with 2 Handle Functionality
10 Review
💯 Premium Quality Greenspring Commercial Stainless Bathroom Lavatory - Superior Performance Guaranteed
10 Review
Diverter Splitter Bathroom Replacement Polished: Upgrade Your Bathroom with Style and Functionality
10 Review
Kitchen faucet (sink) KAISER Decor 40144 granit Black Marble
19 Review
Xiaomi Mijia Smart Hot and Cold Water Dispenser C1 S2201, white
4 Review
🚰 InVade Drain Gallon by Rockwell IBDC128
3 Review
🛡️ Enhance and Safeguard Countertops and Surfaces with StoneTech Revitalizer Protector
3 Review
GreenFist Professional Lemon Scented Pot & Pan Dish Soap Liquid Refill - Light Or Heavy Use, 128 Ounce (1 Gallon)
9 Review