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?
Cheques go out of date after 6 months, but the bank should still honour it up to 6 years as there is still a legal liability on the debt. If it's a dividend cheque then it's 12 months and a 9 year liability.justaguy Â· 9 years ago.sually 6 months, but it can be longer for certain cheques. I recently received a dividend cheque which stated in the small print along the side that it was valid for 12 months. I'd get it to the bank within the next couple of weeks if I were you.