Jeff,
I have recently seen and evaluated a product that might help you with your problem.It is not available in the USA/CA market yet and wee are looking for test sites to see if it would eliminate this specific problem.It works extremely well at Aisle ends but we get a lot of calls for your type problem. Please contact me directly for more info.
Not wishing to be mysterious but it is still patent pending.
Andrew Jordan take out the no spam
NO SPAM ([email address removed])