Botting 99 strength

Anyone have any tips on how and where to bot 90-99 strength? I've never botted any combat before and it's getting insanely repetitive to do it legit. I get low xp per hour where I'm training now and I've tried hellhounds and my health goes down rather quickly and I don't have a script that can bank there.

Attack is 78
Def is 70

 

i got 110k exp an hr and 100 crimsons an hr with dust devil killer bot on powerbot. need 65slayer tho, got 99def and str <3

 

Deadly red spiders xp is 150k +

 

Where are they located and what's their combat level? I've never trained my slayer so the dust devils aren't really an option unfortunately. Thanks though!