I use Domestos thick bleach for the loo, killing mold in the shower and santisiing the dustbin - gets rid of those vile smells. Versatile and multi-functional. I use the Lavender version but they have an unscented one too.
A big plus is that for every bottle I buy, Unilever contribures a portion of the price to their Safer Schools Sanitation project in partnership with UNICEF.