Regarding using masks for oxalic acid evaporation: Having used a set of the evaporators which are inserted into the entrances today, I can see the wisdom in using a mask when using this type of unit. This method exposes the user to far more oxalic than the blower methods I am familiar with, no matter how it appears in pictures. The blowers allow the operator to remain upright and away from the fog when retrieving the unit after fogging a hive. The individual electric hand units require a lot of leaning over close to where the oxalic has just been applied and handling hot pans with residual acid. As for gloves, though, I continue to see no need. Even when handled in snow with bare hands, there is no hint of a burn, and the kitchen cleaners containing oxalic acid do not require them either, although for repeated use and for sensitive skin, gloves could be a wise choice. *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html Guidelines for posting to BEE-L can be found at: http://honeybeeworld.com/bee-l/guidelines.htm