Hi Karl,
Exactly what do you expect the toilet chemicals to do?
The pink liquid is really just a surfactant and fragrance to help rinse the toilet bowl and leave a fresh smell behind.
The blue liquid (or green if you go the full biological route) comprise a heavy duty fragrance, surfactants to keep the interior clean, and chemicals or biological agents to dissolve any solids and keep gas production to a minimum.
But you should be aware that "Blue" needs to be replaced after 4 or 5 days, "Green" after 3 days - and only if you added the correct amount of additive in the first place.
If you use the toilet for "bowel movements" then you should be dosing at the recommended levels, and replacing at the right time interval.
If you only use the toilet for #1's, then we've found that you can reduce the dosing level by 50% and still retain good control for the 3 to 5 days.
Robert