The kit was delivered as promised and we just got around to using it.
The video instruction on line was clear and made it sound simple to use.
Well, it was simple to use. I noticed a settlement in the cleaner container so it seems important to emphasise the need to shake well before use.
The cleaner has a mildly pleasant smell so it seems OK for sensitive noses.
We did get dirt out of the air-conditioning and it is running well and clean.