I know it says you can use it when they can keep their heads up good. We've been using it every so often for the last 2 weeks because she likes to sit up now as opposed to laying down. My MIL says we can't leave her in it for more than 5-10 minutes at a time though because of her developing spine...makes sense. What do you do and how long do you leave them in for? The bumbo website doesn't actually specify!
Re: Bumbo users--how long do you let LO sit in it for?
This! Although he is probably closer to 5 minutes than 10.