I have not used First Saturday Lime,, but have read about it. I is a premium version of lime, that is supposed to be SAFE.

While other versions of lime are not really considered DANGEROUS,, they do have their drawbacks in use.
I have used Hydrated lime before, and aware of it being capable of causing skin irritation to different degrees.
Loooooong ago,, I used hydrated lime and made a paint like consistency,, and painted the inside of a garden shed. Reason for doing such, was to prevent insects eating my sheds. It did do that, and lasted years. That was the interior of shed.
In many countries, in rural villages, people whitewash the exterior of their homes. They also whitewash fruit tree trunks same way.
Lime is not a bad thing then

Read the directions for use on a bag of First Saturday Lime, and follow procedure. Or read up online.
WISHING YOU BEST,,,,,,,,,,,,,,,,,,,,,,,,and