Working wasp

I have a lovely teak rocking chair which I occassionally sit in.  At the moment, I have to remove a good few wasps who are eating it.  They eat up the silver surface and use it to build their nests.  Then come back for more.  Apparently it doesn't so the seat any harm.  But it is hard to sit and relax when wasps are buzzing around your ear and munching the place you are sitting.  Even though they will do me no harm.  Just don't want to put that to the test