How do we stop persistant robbers.I've shut up the entrances to about 1/2 inch sprayed the little blighters with water and still they persist. The bees are coming from a let-alone neibours bees about 3/4 mile away.Other than setting fire to his hives I'm looking for some suggestions.I can't move my two colonies away from their present location. 
Want to get them thro' the winter not unite.
did the glass trick last year on a swarm covering 5 frames that appeared in october it was sucessful in detering the wasps dont know if it will with bees, theory was to put the glass across during the night when bees are in bed in morning they learn quickly how to fly out and around barricade but wasps have problems finding way in. might be worth a go with robbers. Could you maybe not speak to the other beek and explain that his bees are robbing and that it is all well and good him not doing much with his bees, however not fair if he expects your bees to feed his!! I had to have a similar discussion with someone at the pub the other day who bought bees and lets them do their own thing - hasnt been on courses, supprised that he hasnt got honey this year etc etc, he also didnt see any need to treat bees for varroa as he only had 1 or 2 mites drop in a day.
had to explain to him that maybe if he treated he might find a few more, remember i was chuffed with small mite drop last year, but as soon as i treated i was getting over 100 a day drop. And as you have pointed out it isnt fair on other bee in area
Trouble is most of that thread (and others like it) referred to various ways of trapping wasps - bees being more fussy about what they land on/in to eat.
