2000 flushes blue?

If the package claims it lasts for 4 months or 2000 flushes why does mine only last 2 weeks. Im single and never home so the toilet never gets used, so what am I doing wrong? And yes im putting it in the tank and not the bowl

Answers:
You also need to make sure the cake is not close to the fill tube where the water will hit it directly . put it on the opposite side of the tank that the water comes in.

Other answers:
could it be that your toilet is running / or you have a leak?
could it be that your toilet is running / or you have a leak?
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