To be eligible for the $50 Oral-B cashback offer you need to buy one if the following models before 12th June 2013. Oral-B Triumph with Smartguide IQ5000, IQ5000 dual handle, Professional Care 4000, Trizone 3000, Professional Care 3000 + dual handle,
To be eligible for the $30 Oral-B cashback offer you need to buy one if the following models Professional care 500, Trizone 500, Profesional care 1000 or the Pulsonic.
Cashback redemption claims must be received by 12th July. Applies to any 'national retailer' though this isnt specified so it must be a wide definition. Redemption is made on the linked form.