Sludge Mate container filters from Flo Trend Systems can be used to dewater a variety of sludge and waste, including alum, ferric, lagoon and digested sludge, septic tank, grease-trap and slaughterhouse waste, wastewater residual, and sump bottoms. The closed-system design provides total odor control, no spillage, reduced maintenance and weather independence. It has 10-gauge reinforced walls and a seven-gauge carbon steel floor. Available designs have peaked roofs with gasketed bolted-down access hatches, drainage ports, inlet manifolds, floor filters and side-to-side rolling tarps. They produce cake that passes the paint-filter test, and transports straight to landfills for dumping. They dewater on site and are available in roll-offs, trailer mounted and tipping stand mounted in 5- to 40-cubic-yard sizes. 713/699-0152; www.flotrend.com.