@Zincy
When it comes to eradicating insects, it’s best to know what weapon works best for each type of insect.
I don’t know about mosquitos, but ants and roaches are best dealt with a slow-acting poison bait, one that the bastards can bring inside and kill the colony from within. That slow-acting poison, and this was recommended to me by an exterminator, is fipronil.
Make sure you get the right one for the specific insect (the one made for ants is a clear gel; the one made for roaches is a brown paste). Make sure to use the syringe too; the traps aren’t as effective.