Citronella oil is a common ingredient found commonly in odomos and other mosquito repellents as well.But no one seems to wonder about the quantity of this ingredient in mosquito repellents.The quantity of this is only 10% at max.
So,the best way to safeguard yourself is use pure citronella oil or citronella essential oil.Always think that  isn't it better to prevent yourself from mosquito bites and safeguard yourself from various vector born diseases like chickingunya,dengue,malaria,ZIKA,and many more.
My final advice is that prevention is better than cure and please use only a drop of citronella oil on clothes before leaving your house .
DISCLAIMER: DON'T USE IT ON SKIN AS SOME PEOPLE DEVELOP ALLERGIES BUT EVE IF YOU DO YOU CAN USE BENTNOVET C TO CURE YOURSELF FROM SKIN ALLERGIES.
The commercial mosquito repellents only manipulate you to buy them but make a better choice and use the pure form to safeguard yourself.