aye Delboy so hard get rid of, i,ve had walls striped out 3 times try,n clear f**kers, didn,t bother we birds for 4-5 years, no point breeding ybs they must pick at droppings when they still in box, reduced them but they still thier, and with mice u will then attract cats hanging around loft, birds wont get rest at nite we them, so no rest, no fly, aye Delboy so hard get rid of, i,ve had walls striped out 3 times try,n clear f**kers, didn,t bother we birds for 4-5 years, no point breeding ybs they must pick at droppings when they still in box, reduced them but they still thier, and with mice u will then attract cats hanging around loft, birds wont get rest at nite we them, so no rest, no fly,