Great tips. But it seems like maybe you should remove the part where you suggest people intentionally buy, use, then return an air monitor.
It's one thing to buy something and return it because you are genuinely dissatisfied, but what you are suggesting is called wardrobing and is pretty unethical, and it incurs costs for retailers and manufacturers.
Also, it can be damaging to the environment if products are needlessly manufactured and disposed of. I don't think it's a good idea to suggest this kind of behavior.
It's one thing to buy something and return it because you are genuinely dissatisfied, but what you are suggesting is called wardrobing and is pretty unethical, and it incurs costs for retailers and manufacturers.
Also, it can be damaging to the environment if products are needlessly manufactured and disposed of. I don't think it's a good idea to suggest this kind of behavior.