That is called secondary poisoning. You can obtain technical bulletins from the various manufacturers. You just have to ask! Here is an example:
http://www.crittercatchersinc.com/critters/Mice/rodenticide_secondary_poisioning.html

truthfully, I'm not real familiar with the soft baits. I've only (recently) used the solid-type blocks available to homeowners.

In the past, we tried the decon pellets. they just ended up being stored in obscure places (packed up glassware, hoods of winter jackets, etc.); only to be found months later.