I only use the actual Eheim branded product. Just in case my shrimp react to a product not specified for aquarium use.
A search on line, or ebay for......... EHEIM-400100-MAINTENANCE-SPRAY-150ml-NON-TOXIC will bring it up.
Interesting thread, so many different ways of looking after our prized and expensive possession... The Filter.
Being a eheim follower, i will be sticking with their product, even though not a cheap option.