As an AWS Certified Developer Associate, you are responsible for optimizing costs and ensuring efficient usage of AWS services within your application. Recently, after an analysis of your monthly AWS bill, you observed a significant increase in the cost associated with Amazon Simple Queue Service (Amazon SQS). This increase in cost occurred after you added new SQS queues. Despite this cost hike, you know that the clients interacting with these queues are not generating substantial traffic and are often receiving empty responses.

Given this scenario, what actions should you consider taking to address the issue?