It all depends on the boomers. Some boomers' pawprints can be turned off, others can not.

If they can be turned off, usually it's done by clicking your mouse on one of them, which would bring up a menu with various choices (hopefully including an on/off setting).

When you bought them, did they come with a notecard in the package? Sometimes designers provide instructions that way.

If yours can't be turned off, you can try to visit my blog's resource page on "Neko Paws and Paw Feet Boots" to go shopping for an alternative:

http://virtualneko.com/neko-paws-and-paw-feet-boots/

However please note: I have not been able to update that page in a while, and because stores move around often in SL, you'll probably find a few broken slurls there.

(If you're really determined, when you find a broken slurl, you can do what I do: type in the designer's name in an SL search window, pull up their profile, and hopefully they'll have a new store LM in their picks).

Good luck!! ^_^