I think I have borers on my Apricot saplings because I see balls of sap on the little trunks which are the size of a grape, on finger or thumb size stem. I would like to know how to kill the little devils that are doing this, using something from the kitchen which can be eaten, and so is safe, or heat or cold or can I pick out the little things ? The environment is a chook yard, it has no real weeds and is rather dry lately except that I water the plants. I've generally just seen talk of the chemicals which would probably do a better job of making me sick or dead rather than the borers. I don't care for chemicals beyond what's in the kitchen.