Is Sentinel an option? The Vet Tech gave me some info on Activyl the last time I took Bobby in, I never looked into it because I changed HW meds. I agree the older flea chemicals don’t seem to work anymore.
I have been looking at a few different chew options for Bobby, I’ll pass the info along to you when I can find them. I got a little frustrated researching chews, there seems to always be a caveat with everything. lol Do you ever worry about accidents leaving your dog unsupervised with bones, chewies, dental bones, or rawhides?
