it won;'t say "CFL" on the box... it might say "Compact Flourescent Lamp"... if you live in north america somewhere (I can;t speak for other parts of the world), I would be incredibly surprised if any store that sells light bulbs doesn;t have them... dollar stores perhaps behind excluded since they typically cost a little more than incadescent bulbs.

It might not say that either though... they might just say "Energy Saver Bulb" or something along those lines.

FYI, read the lighting links in my sig for some really good info about lighting in general and CFLs... i suggest you read them before you buy your bulbs.