THE Stirling and Clacks Trading Standards team has warned locals about rogue traders offering to "spray paths and front doors to get rid of bacteria".

The team is also aware of fraudsters posing as NHS staff and offering to help people with their shopping in return for payment, or trying to get donations to fund a "vaccine".

The group advises people to remember they are not being rude by shutting their door on unsolicited callers marketing these bogus services.

In a statement, a spokesperson also said: "Don't agree to make any payments for goods or services offered by cold callers.

"NHS staff will not turn up at your door unannounced and ask you for money or donations.

"If someone that you don't know knocks on your door and offers to buy groceries for you, don't pay them up front.

"Any genuine good samaritan will be happy to accept payment once they have delivered your shopping to you.

"If you feel feel uncomfortable or suspicious, call Police Scotland on 101. If you feel threatened or unsafe at any time, call 999."