Can you use this activator with elmer's glue?

Yes! Our young scientist used it with both clear and white glue. :)

When using this slime activator with AmazonBasics non-clear school glue, what ratio of glue to activator should I use?

We didn't use AmazonBasics non-clear school glue, but used another generic brand. Less is more with the AmazonBasics Slime Activator. The slime activator was very effective in getting us the texture we wanted in small quantities. However too much activator, overdid and turned our glue too hard to manage.

Does it become a little jiggly like the elmers activater?

I don’t have experience with Elmers brand activators but the bottle I received is a little gloopy. It’s almost a little slimy itself. And a little goes a long way as another reviewer states.