Problem is, it doesn't remove ammonia, it converts it to ammonium, which is harmless to fish at levels found in a cycling aquarium. The ammonium is used the same as ammonia by your nitrifying bacteria, producing nitrite. That is where the problem lies, you may not see an ammonia problem, but you will see a nitrite problem.
The products sold for instantly cycling aquariums do not work. You will be hard pressed to find any peer reviewed scientific documentation stating that they do. Bacteria are living organisms, and need a food source, in a cycled aquarium that food is ammonia and nitrite. There is no food source being sealed in a bottle for any length of time.
If you have an existing mature tank, you can clone another tank off of it. This works off of the principle of the ability of a mature colony of nitrifying bacteria being capable of doubling every 24 hours. Take some mature bio media, no more than 1/3 from a tank, guesstimate the stocking of the donor tank, and stock the new tank no more than 1/3 of that.
It helps to fast the donor tank for 24 hours before pulling media, as well as the new tank for 24 hours after setting up. Less food means less waste produced, giving the bacteria a chance to catch up. I usually feed both tanks lightly for the next week as an added precaution.
Knowing how this works makes it easy to set up or take down tanks as needed, this is common with breeders, importers, or folks who order in fish for sales. Most just run extra sponge filters, and pull them as needed.