I have a really bad reaction to mosquito bites and so use an aerosol repellant with 30 DEET that lasts for 8 hours. I wear long sleeved tops and long pants and only spray my clothes, not my skin, if I have to spend time in the garden. If I get careless and do get bitten occasionally, I use Benadryl cream and it does work but I have to apply every couple of hours.