I have reviewed many products, including ones that are listed as "pest control", "worm treatment", "toxin-based" and "worm removal". So, before you buy, make sure what you are buying really is a product against parasites. The products are sold in a variety of forms. Here is what I consider the most appropriate for my purposes:
A product against parasites should be labeled as "worm removal". A product that is labeled "pest control" has to contain at least a small amount of a parasite parasite that is the subject of a prescription for treatment. Products in the "worm removal" and "pest control" categories cannot contain other parasitic parasites or even products that are considered parasites themselves. So, the "worm removal" product is probably not the product you want. If there is a product that can be used for both parasite control and treating disease, the label should include the product in both categories. A "worm removal" product should not contain anything that has not been cleared for use against a known human disease (in some cases this might be because it's a natural product). A product that says "anti-biotic" or "anti-spider" on the label, although there's no way to know for sure, is likely to be ineffective at treating or preventing disease.