lol! i've resorted to sneaking my last couple ones in the house so my mom wont see me coming home with another one. and when she finally see's them, i introduce them to her as her "grand children" haha.
I always wait until my Mom is out of the house for awhile, then I walk to Petsmart and get a new one. lol Really, at my age I can do what I want but I don't like upsetting the applecart and my Mom is not a petlover but she IS my "landlady" so to speak. lol