T.N.
Hi Y. C: where I come from we have a lot of this too. unluckily, we get bitten. this is to let you know what we do then. we pinch any 3 herbs or flowering plants, cutting about a tip of the finger sized amount of a leaf that seems juicy Geraniums elc,... grind it to a pulp and apply it to the swollen bump. it goes away in minutes see if you are bitten, it will work for you. experiment with ferns, flowers, etc... this works for babies and up to old age people... best of luck to you.