Always keep excess cash securely locked away in a cash safety deposit box in your outlet.
 
Always deposit bulk cash at the bank
 
Endeavour to accept withdrawals (cashouts); this will enable you to have less cash at hand.
 
Always be on the lookout for fake currency on deposits. Check and recheck any cash received from or handed to customers.
 
Do sign up for the money insurance program to help insure your money at your outlet or in transit.