Ideally several hours to overnight. But, I've also injected, rubbed, and put in the cooker! But then my injection is not enhanced with unpronouncable chemical names. Also, if you have vinegar in the injection it may start "pickling" the meat where it pools!! Don't ask me how I know this!
Southern Brethren BBQ Competition Team
"It's all about getting paid!" - Myron Mixon
"I love being hated in my hometown!" - David Hair
KingFisher Gator Rotisserie cooker, WSM, Stainless 5 burner with IR gas grill, Turkey Fryer, Weber JD Commemorative grill, slightly used Bandera chamber for future use as a cold smoker, Masterbuilt 40" insulated ELECTRIC smoker