ok trying to expand my knowledge..........

what are they?
why don't they work in daz studio?

http://www.daz3d.com/i/shop/itemdetails?item=2180

IMPORTANT LIMITATION NOTES- This Product is NOT compatible with DAZ|Studio

seems it  works for Poser  Nopt D/S

Dynamic Deformers was another method, using magnets, to introduce morphed bodies without using DAZ specific morph packs.  A fairly convenient package and has been around for a very long time.  The reason it doesn't work with DAZ Studio is simply because it was never developed for Studio in the first place.

also

This Product Will NOT work on P4 Human Figures, Animals, or Other Figures that do not have ALL the following body parts. Head, Neck (Upper Neck Optional), Collar, Shoulder, Fore Arm, Hand, Chest, Abdomen, Hip, Buttocks, Thigh, Shin, Foot.
While There is NO limitation to the number of figures that can be used in the same scene, many Deformer Tools will only work on the first figure loaded.

To expand on what hborre said, the Dynamic Deformers use Poser's magnet system to deform the bodies.

Daz Studio has it's own magnet system, which isn't like Poser's, and are thus incompatible for any product designed for Poser.

DAZ Studio cannot handle the way the ERC between the remote props and the figure is set up. So the magnet settings that can be controlled from remote props are not transfered to the magnets in the figure or the conformed clothing items.