Excella Refillable Bottles Work With The Unger Excella Floor Care System (Not Included) That Features A Superior, Ergonomic Design For A Safe, Efficient Microfiber Mopping System. 1-Liter Refillable, Plastic Bottles Use A High-Precision Dispensing Mechanism And Nozzle. No Clogging Or Flushing Is Required. Measurement Guide Allows You To Fill With Ease. Cleaning Solution Is Not Included.