Last year around this time was my first experience with a squirrel with bots. One of my releases showed up with about 7 almost ready to drop out. I have 8 squirrels that I've released in the last two years and 4 still regularly visit for blocks. I just had one show up with them again. She's skittish so I couldn't get a good count. Can you dose a drop of ivermectin onto blocks to treat ahead of time to prevent this? It seems in my area they have hit at the same time the last two years. Just wondering if I start dosing with ivermectin mid August if I could prevent this from happening to them. Any advice?