Improving hygiene standards through inter-departmental competition

in order to improve and sustain compliance to the BRC/IOP standard, I introduced inter department competition where by I inspect each department for hygiene every month and award points. cumulative annual points will converted to valuable price (say shopping voucher) at the end of the year. I have now inspected for four months and the results are good. but before the start this process in January this year, i conducted short coming analysis in which two issues became evident; (1) one department may relax after attaining high score and (2). the exercise can become boring and tiring.

I would to know how to deal with these two issues to make the exercise exiting and fruitful.

I would like to suggest two things:

1) Carry out spot checks weekly on different areas using part (or all) of your hygiene inspection documentation and just do them at randon times. This will give you a better picture of what is going on 'behind your back' and they can't relax standards of hygiene or points could be deducted.

2) Get someone from each area (or a Supervisr) to carry out the spot checks on your behalf.
In our packaging company, for the production area, I have produced an audit checklist for the Supervisor to undertake 3 times a week at random times. It could be after first or second break on any day. It covers jewellery, nail varnish & false nails, correct wearing of uniform, hearing protection and a pocket check to ensure no personal items are carried. This works extremely well.

Random checks is a good idea.

my monthly audits are unannounced.