1 Professionally dispensed kits from a dentist's office designed to be used at home typically cost $100-$500, depending on the location and dentist. 2  Take-home whitening kits include custom-made trays and typically use a stronger bleaching agent than over-the-counter systems.
... NewsGroupQuestion wrote: How long is a UK cheque 'valid' i.e. how long can a person keep a cheque before presenting it to their bank and still have it honoured? Conventionally, six months.Some cheques have earlier expiries explicitly written on them.ow long is a UK Cheque 'valid'? I hope this is the right group to ask this question..... How long is a UK cheque 'valid' i.e. how long can a person keep a cheque. before presenting it to their bank and still have it honoured?
Until 1 April 2012, cheques in India were valid for a period of six months from the date of their issue, before the Reserve Bank of India issued a notification reducing their validity to three months from the date of issue.n English cheque from 1956 having a bank clerk's red mark verifying the signature, a two-pence stamp duty, and holes punched by hand to cancel it. This is a crossed cheque disallowing transfer of payment to another account.