Chenille Kraft

Chenille Kraft
is this good clay for modeling?

http://www.walmart.com/ip/THE-CHENILLE-KRAFT-COMPANY-Reusable-Modeling-Clay-Assortment-220g-Eight-Neon-Colors/14622110

Just be aware that “modeling clay” generally means a plasticine-type clay, and that kind of clay will never harden, if you’re interested in that.

If you want a clay that hardens, you’ll need to get a polymer clay (which hardens with heat, usually in a low-temp home oven) or get one of the many air-dry clays (which harden by losing their water through evaporation over about 24 hrs):

http://glassattic.com/polymer/Characteristics.htm

http://glassattic.com/polymer/sculpture.htm

Walmart doesn’t always have the highest quality of anything, but most “modeling clays” are intended for kids to mostly just moosh around, then use again, so that may not matter to you.
If you do want a high quality modeling clay, go to a craft store (or online) and buy the brand called ClayToon

http://www.vanaken.com/claytoon.html

….or order the brand online called Plastalina which is the best out there (and used by many animators):

http://www.vanaken.com/plastalina.html

HTH