Empty spray bottle is specially designed for use with Diversey Virex II 256, a one-step, quaternary-based, disinfectant/cleaner concentrate providing broad-spectrum disinfection at 1:256 dilution. The sturdy plastic bottle is labeled with the product name and directions so you can use the blue cleaner (sold separately) carefully. Top screws off easily so you can pour the cleaner inside. Neck is ridged for a comfortable grip.