non-swelling particles that have been agglomerated in a pin mixer, said non-swelling particles having a size range of about −10 to about +50 mesh, said non-swelling particles are selected from the group consisting of clay, quartz, feldspar, calcium bentonite, calcite, illite, calcium carbonate, carbon, mica, Georgia white clay, hectorite, smectite, opal, kaolinite, pumice, tobermite, slate, gypsum, vermiculite, halloysite, sepiolite, marls, diamomaceous earth, dolomite, attapulgite, montmorillonite, Monterey shale, Fuller's earth, silica, fossilized plant materials, perlites, expanded perlites, and mixtures thereof; and

a swelling agent having a size range of about 60 mesh to about 300 mesh coated on said non-swelling particles, wherein said swelling agent has a particle size distribution such that at least 90% of the particles pass through 100 mesh and said swelling agent is selected from the group consisting of bentonite, sodium bentonite, calcium bentonite, guar gum, starch, xantham gum, gum Arabic, gum acacia, silica gel, and mixtures thereof, wherein the swelling agent includes an additive selected from the group consisting of an odor control agent, a fragrance, an anti-microbial agent, an anti-sticking agent, an agent for controlling pH, a powder for coloring, a dye, a coloring agent, colored particles, a dedusting agent, a disinfectant and combinations thereof.