Lens blower brush

[bascom]

Do any of you have a Lens blower brush? Do you use it to clean your lens or the LCD or both? I have a Canon A610 and am wondering if I should buy one to clean the lens and LCD. Here is one:
http://www.usa.canon.com/app/html/EFLenses101/lens_care.html

[JLV]

I bought a brush like that 40 years ago. It was OK.