One of my horse magazines recently did a review of stall-dry products, which I also use in my coop. I looked up poultry safe indicators and composting. I have personally always used Stall Dry, but Tractor Supply was out, so I will be doing a test of SweetPDZ now. But I am very tempted to get the liquid and try it as deodorizer. Product - Odor-No-More Website - www.odornomore.com Cost per day - $1.33 / day Ingredients - acrylic acid polymer, sodium salt, copper sulfate, potassium iodide, pine shavings, Cupridyne (GRAS) Safe for poultry - No - "Not intended for use with poultry. " Composting - Yes Other Comments - Despite saying "eco-friendly and non-toxic" bag carries a warning about poultry. The micro-nutrients used, are supplied as feed supplements to humans and animals. The super absorbents are environmentally friendly and non-toxic degrading to inert ingredients that become part of the soils hummus fraction. Dry. This is a tan flaky powder, odor was clearly reduced, works by absorbing the liquid then reducing the odor inside the flakes. Product composts well. Safe for human and animal consumption. CupriDuyne is used in other products like kitty litter and wound dressings. Product - Stall Fresh Website - www.stallfresh.com Cost per day - .37-.74 / day Ingredients - Montmorillonite Clay, Seaweed Concentrates, Vegetal Absorbents, Alginates, Essential Oils Safe for poultry - Yes Composting - Yes Other Comments - Dry. Light brown powder, faint pleasant scent. Product - Bye Bye Odor Website - www.spalding-labs.com Cost per day - .06 / day Ingredients - contains microbes developed to consume nitrogen, protein and starches Safe for poultry - Yes Composting - N/A Other Comments - Liquid. Although it takes a couple of days to notice the difference, we became nearly addicted to using this spray. It has a fresh natural scene that is not strong enough to be a cover-up. We applied a light mist (using a garden sprayer) to anything we wanted to deodroze Product - Stall Dry Website - www.wicp.com Cost per day - .75 - 1.50 / day Ingredients - Diatomacesous earth (DE) and montmorillonite clay Safe for poultry - Yes Composting - Yes Other Comments - Dry. Absorbs moisture, may build up. Product - Stall Powder Website - www.kaeco.com Cost per day - .28 / day Ingredients - Calcium carbonate, verxite granules, ferrous complex, proprietary saponins, DE, methyl saliylate. Safe for poultry - Unknown Composting - Completely Biodegradable; Non-Toxic Environmentally Safe Other Comments - Dry. Fine, gray powder, long-lasting, strong, pleastant mint-like scent. Low airborned dust. Low moisture absorbancy compared to others, but very good odor control. Product - Sweet PDZ Website - www.sweetpdz.com Cost per day - .37 - .57 / day Ingredients - clinoptilolite clay (zeolite) Safe for poultry - Yes Composting - Yes Other Comments - Dry. Available as a granular form and a pellet. Odorless. Not as wat-absorbent as some other choices but the odor control is excellent. Low to no dust with granular form.