Simple advice.
explore your unique selling point! usp
Once you have that, market any flyers based mainly on this usp.
make sure your website gets your service across properly.
make sure you can be found.
Question yourself as to why has your business dropped?
Are you competitors trying harder are they better than you?
Remember one thing if you don't try you only have yourself to blame!
5000 flyers are usually just £99 double sided maybe £125.
Look for a demographic that would return better than others.
Don't be afraid to follow up on your flyer drops by knocking just a few days later.
I'm not telling you how you must approach them you should work out a simple format and work on that.
Do it yourself and see how it goes.
if you still struggle after doing this then pull the help from outside.
Remember one question to ask every customer before you leave a job.
Don't know but is there anyone you know who may need my services as i am looking for a little more business at the moment.
Hope this helps you out.