Keep your tank pure
You know those tablets that you drop in your tank that turn the water blue? Although they keep your toilet bowl sparkly clean, they also destroy everything in toilet tank. The way they work is with highly corrosive chemicals to eat away at all those skid marks left behind in your bowl. However those corrosive chemicals also eat plastic and rubber. Now if you have ever looked inside your tank you would know that everything in there is plastic and rubber, even the washers keeping the water inside the tank are are rubber. So its up to you in reality, you gotta take the good with the bad. Using these cleaning tablets that drop in the tank will in fact keep your bowl fresh and clean. However you will find yourself repairing your toilet way more frequently. Not only that, but do you remember those rubber washers I was talking about? If those start leaking and that blue water gets into the grout, your grout will forever be blue. This stuff does not come out or off of things easily. The choice is yours my friends. If you decide to use the cleaning tablets I can teach you how to rebuild your toilet. If you decide not to use those tablets you will still have to fix your toilet just not as frequently. Choose wisely.