How do I stop the weed coming from the other side of the blockade?? besides my neighbours, there is waste on the other side of...

besides my neighbours, there is waste on the other side of the fence, which belongs to a pub which doens't do anything beside it. Therefore, weeds and creepy crawlies and slugs hold made it their home; and I get lots of them coming from above or beneath my my fence or even from the ground itself where on earth the weeds maintain popping out. I don't know wht to do! I have spent lots on weed and slug killer. They keep coming rear (especially since that it has be sunny lately) and give me the creep! assistance!
Answers:    I would buy a bottle of Roundup, go around to the other side of the paling and hose it down. The Roundup will kill the weed and grass and if there is no weed and grass, the creepy crawlies should stay away. Roundup does have a formula that last all summer long, so check for that. If you quality funny going to the other side of the fence, spray from your side beneath the fence.