Cleaning solution alternatives

recently I bought a teebot t50 omni pro gen 2 and I'm really satisfy with i. But the cleaning product they propose is a bit expensive.

I saw on a previous post people using Bissell as a replacement.

- are some other here also use bissell and are you satisfy ?

- do you put in the clean water tank or the dispenser tank ?

- how much do you put ? do you fill the dispenser tank ?

I really don't want to break my robot, so thanks all for your advise !