I use the weed bombs only when my peeps are older than 55. It's a bit annoying to pull more than two weeds when they're both that slow - so I always watch out for weed bombs when my peeps reach that age. Otherwise it's like:

"Darling, food is ready!"

"Oh ok, thank you! I just have to pull these four weeds, I'll be there when I've finished... that'll be in... ummm... two and a half hours?"

"Hmph."