I always use 2000 Flush blue plus detergents in the my toilet tank at my house. It is very effective at deodorizing and cleaning the bowl. It dissolves in water and turns it blue.

This pill is very effective for us as it lasts a long time, approximately 3 months, it has a good clean smell but it is not so strong. The package we bought only contains one pill and costs approximately 6

The cleaner works great. I find my toilet stays clean much longer than expected. Just have to do a quick clean once or twice a month. When I bought it i was concerned that it would have a strong odour that would attract my dog however I haven’t had any issues with that as it is scentless.