If you're in Western Canada, visit the program page and select 'find a public drop-off point' to find participating London Drugs retail locations where you can drop off you Brita products and packaging.
If you're in Alberta, British Columbia and Saskatchewan, this program is currently full. You can join the waitlist by visiting the program page. Once you add yourself to the waitlist, you will be notified via e-mail when a spot becomes available and you are able to send in your products for recycling.
More information on waitlisted programs can be found here.