best citronella candle for keeping away mosquitos? (esp one available in canada)

[btfc]

I've used these: http://www.amazon.com/Lamplight-TIKI-140..._2?ie=UTF8&qid=1308541577&sr=8-2

More here:

http://www.amazon.com/s/ref=pd_lpo_k2_dp...op?ie=UTF8&keywords=citronella%20candle&index=blended&pf_rd_p=486539851&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B000E3FND2&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=0XHG8B3RDANRX37ZMRSC