Plop plop fizz fizz oh what a relief it is...

Company should be here any minute and the toilet could use a cleaning.  No toilet cleaner... No problem.  You can drop a couple of Alka-Seltzer tabs into the toilet.  Let them set in there for about twenty minutes then clean as you normally would.   Denture cleaning tabs will work for this also.  I have seen both of these products at the dollar stores.