we use a combo of both computer and pen. We print out the daily list of customers, i page per job with all the info, application name, list of products that could be used, info blocks for special instruction, wind speed, etc. Then when on site we fill in the wind speed etc, check off the product used, and check off the special instruction for product used, and fill in time etc.
We also have a similar copy with the same info that goes back to the office.
I make a customized invoice type form in Quickbooks and call it Treatment record. I basically arrange the fields and columns to track all the required info and then since the customers are already in my database I just make a treatment record for each customer when I do an application. I used to print them out, now I just save them and make sure I perform regular backups.
Are you guys saying that you have to have an overall record of what chemicals and what rate was applied, or are you just talking individual applications? I just keep individual records and think this is all I need, but maybe I need to find out more. I do know each state is different, so no need to go there.