Hi and welcome to Parrot Chatter.
Interesting invention you have there.
Sadly, they won't work on several of our cages.
But then there are those that they will work on.
Here's what we use at this time.
And as you can see, the mats don't always catch everything.
I guess the way I look at it is, if I am going to be scrubbing the floor anyways, why bother with even the mats, there simply another item to work around while vaccuming and another item to clean.
Pickles Cage/Green Quaker

Athenas Cage/Female TAG

Buddy's cage/ Male Tiel

Pollies cage/Female Green Quaker
The birds room/9 cages
Our birds are everywhere on there cage, and as you can see, there droppings are everywhere.