i believe so, at least I have seen others recommend using a syringe. I have a measuring syringe and plug (kit) i bought at the pharmacy (off the shelf) used for these type of things. works great and when the bottle is empty, i pull the plug and save it for another bottle. There is a cap on the plug and a hole to put in the syringe so no spilling either. just a thought if you plan on using alot of these. real cheap too.