Wade, i would try this product from Cantol i saw them put Draino in a styrofoam cup and Ora-Solv in a styrofoam cup and the Cantol product dissolved the cup. Or Eze-Flo both are safe on all types of drains.
ORA-SOLV PLUS contains biodegradable solvents and emulsifiers which dissolve grease and control odors. Environmentally compatible ingredients chemically combine to effectively dissolve grease, fat, oil, slime and soap scum in drains, pipes and grease traps. A natural citrus based solvent replaces masking perfumes to give a fresh orange grove aroma while dissolving greasy residues. ORA-SOLV PLUS mixes with water to give a uniform, economical solvent system. Used on a preventative maintenance schedule, ORA-SOLV PLUS helps prevent grease and slime build up in drains and pipes while controlling odours. ORA-SOLV PLUS will not harm metal pipes, generate heat or affect bacterial activity. Being biodegradable and free of typical solvents, acids and caustics found in drain treatments, ORA-SOLV PLUS may be used without fear of contaminating the environment or contributing to hazardous working conditions.
EZE-FLO attacks clogged drains without producing a back-up foul odour. The fast-acting, ready-to-use, alkaline liquid will remove obstructions due to grease, hair, vegetation, rags, paper and other organic matter. EZE-FLO is heavier than water; therefore, it flows directly to the blockage.
Pour 2 to 4 ounces of EZE-FLO into the stoppage and allow to stand for 10 to 15 minutes. EZE-FLO goes directly to the spot, penetrates the stoppage and opens the line to flow freely -while not giving off offensive fumes. adding a little EZE-FLO to troublesome drains once or twice a week as preventive maintenance. EZE-FLO keeps drains open and free running.
The fumeless action of EZEFLO makes it ideal for use in hospitals, schools, and other sensitive environments. EZE-FLO is harmless to pipes, plumbing, vitreous china, porcelain surfaces and will not harm PVC or septic tank action. To help prevent overflows, slow drainage, use EZE-FLO regularly!
Heres there number 1-800-387-9773 tell them Shawn Dunn referred you.
Plus they GUARANTEE
Cantol guarantees its products, when used as directed, to do all it claims. Should the product fail to demonstrate our claims, theremaining material may be returned to us and no charge will be made.