Better-Vent indoor dryer vent - anyone use?

[Samantha Klein]

I purchased a duplex in July and one side has laundry hookups however the dryer has been previously venting under the floor into the crawlspace and obviously I don't want that. The hookups are on an inside wall and there is no easy way to vent it outside. I was thinking of setting up this product - https://adr-products.com/

You can get one on Amazon for $48.00 and it seems like a decent alternative. Has anyone heard of this or used it and if so, were you happy with it?

[Samantha Klein]

I checked the crawlspace out a little further this morning after posting this and previously they were venting it to the outside but for some reason they uninstalled it running to an outside wall and just ran some flexible duct straight down under the crawlspace. I can easily vent it to the outside now using rigid metal duct. I will make sure to call the building dept and make sure that is up to code.