Hi my name is James Dunn i have been cleaning blinds and shades with ultrasond since 1997. If you have had them up more than 6-8 years it probebley time you think about cleaning them. Droping them in a tub does nothing . Only ultrasound will push the kitchen oders and grease out. Your blinds or shades will be handeled with great care and placed in a chemical free soapy water bath 90Odegrees with 40.000khz of ultrasonic power Call me and tell me what you have ,i can give you full sevice ,removal and instal or we can save you money and just clean and pick up and delivery your choice. And since nothing last foreverl i wont clean any cell shades over 16 years old they might fall apart Sorry no soot, or fire damage THANKS JIM 508-285-4906 leave message