Mosquito vaporizers produce poisonous gases that can aggravate respiratory conditions such as asthma and bronchitisLasting time is the duration for which the liquidizer would last. In liquidizer category brand Good Knight (479 Hrs) was found with the maximum lasting time followed by Maxo (478 Hrs) and Knight Queen (445 Hrs). Brand All Out (336 Hrs) was found with minimum lasting time but almost as declared.Looking for the best mosquito killer for bedroom? Then, try Good Knight Gold Flash. It is a liquid vaporizer that offers superior protection against mosquito menace in your home or office. For best results try inserting the original Good Knight refill into this machine.