It is perhaps the easiest and quickest thing to do. By the time you do see a mosquito land on your arm, just try and chase it away so that it does not bother you again. It would be far better and safer than having to lash out in anger or frustration and slap the creature dead while it is still on your arm. Technicians on duty for mosquito control services in College Park might very well advise otherwise. Because by doing so, killing the bug dead while still on your arm, you might end up doing more harm than good.
Why is this? Just think about this logically for a moment. By slapping the mosquito dead right there on your arm, the mosquito, in shock, might involuntarily proceed to jab your arm in any event. And in doing so, it could release previously infected blood collected from elsewhere. And that infection could then pass on to you. Mosquitoes are not venomous creatures as such but they could still cause harm.
At the first sight of any mosquito, this should be the moment that you call for help. Do not use handheld insect repellents. They may well work but they are only temporary solutions. There is always the possibility that there may be many more mosquitoes hiding away somewhere. It could be on your property. It could be close by. Where ever there is open water, expect to find mosquitoes. They like to use the water for breeding purposes.
It could even be a puddle under your kitchen sink caused by a leaking pipe. These are the kind of signs that the mosquito control services technicians will be looking out for. Early warning signs on how to avoid being bitten.