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?
Report Abuse. a cheque is valid only for 6 months. After 6 months the date has to be changed and the alteration has to be signed by you. If the cheque is paid after 6 months-you can take your banker to court.he bank found it 7 months later (they said under a desk). They refunded me the $600 - so it was free cash for me. Later, I looked up the law on this. Personal checks have 6 months. Company checks usually say void after 90 days. This is US only. If the bank cashes it-argue it-look up this law.