Thousands of auto body collision repair shops like dent repair Cardiff are using solvent distillation units (SDUs) or solvent recyclers to reduce costs and liabilities associated with hazardous waste management. The EPA strongly encourages all recycling and proper waste disposal methods to protect our environment. Their research and analysis in on-site recycling and batch distillation has been an important part of national waste management policies. The fire safety community is concerned about the process of distilling flammable and combustible chemicals. With many auto body shops using SDUs they have increased efforts to establish fire safety guidelines for SDUs. Concerns led to manufacturers and marketers to become educators while those who opposed on-site recycling attempted to create restrictive rules within the industry. Opponents wanted SDUs to be approved only for use in special locations set up for classified hazardous use making on-site recycling financially difficult for small businesses.