"This product is know to the state of California to cause cancer"
This warning is bogus. It has probably never caused cancer in anyone anywhere. What it should say is "This product contains chemicals that in high
intracellular concentrations may
cause mistakes in dna replication that will most likely do absolutely nothing but have a minute
potential to cause cancer, so please don't drink the stuff." They actually test bacteria for a reversal of a mutation when they are basically swimming in the stuff, so it's not reasonable to apply this warning to something with which you will have only incedental contact.
Just about anything could carry that "Cancer in California" warning, so as long as you don't live in California, you are fine.
I have used melafix and pimafix with great success. I also like jungles anti-parasite food and the gel-tek products.