I use it for my Gray tree frog. they love it.

Of course.

Its rough but like a rubbery asphalt wouldnt hurt any but it runs off a little bit if you're beardie is climbing a lot double check the hot side temp and the ambient. Of all the animals I cared for at petco they require the most ridiculously hot basking area 90-95 or 95-100 I dont work at petco anymore but dont go only off their recommendation as they change their policies to save on electric bills so yeah, if it's just under 90 just go up a size when the current bub burns out or add a low watt supplemental bulb or an under tank heater which help growth and healthy digestion by a crazy standard. But really beardies aren't like a lot of lizards that just eat climb bathe they have a lot of personality period. Good or bad tendencies aside say the hotspot is at least 90 you just got a climber is all, some drink with front legs in water some stand on back legs for treats, some climb some swim but since the post is about a year old you're aware of you're beardies vibe what he prefers some dance and show music preference just learned that myself from someone at a reptile expo.

I would say it is suitable for a turtle, it depends if it is aquatic or not ( A non-aquatic turtle example is a Red-eared Slider ) so if it is an aquatic specimen I would honestly try and go for something else like some safe drift wood to decorate the aquarium. If it is an non-aquatic specimen go for it! As another comment said it can be used by frogs which have very sensitive skin, so it mustn't be toxic due the the frogs sensitive skin. I hope this helped!