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?
Quick Answer. According to the Consumer Financial Protection Bureau, a personal check must be cashed within six months to ensure payment. After six months, banks and credit unions are not required to cash the check. Keep Learning.