Playing such small stakes, I'd say there's even a case for 4bb raises. In my experience, your opponents in these games not only tend to be overeager to play hands, but also tend to call based on the value of the bet rather than bet size relative to the pot (i.e. your opponent might think "it's only 15c to call" rather than "15c to call a 25c pot").
3bb is unlikely to induce a fold for these guys, 4bb just might, so I would tighten up my starting hand range and raise 4bb. I'd also add 1bb for every limper before you. YMMV
"Never play cards with a guy who has the same first name as a city" - Coach Finstock, Teen Wolf