Bamboo

Hello ladies, please need some gardening advise.

I recently moved into a house that is COVERED in bamboo and it's growing in little random places, as bamboo does. I can't dig it out because man, the roots grow deep so I've at least been able to snip the shoot off and pour a bit of root killer on it to hopefully stop it from spreading.

But I'd like to dig some of it out because I noticed there are OTHER plants struggling underneath it.

Any tips to get out?

Thank you.