Nola goes in for her heartworm test next month, and I need to make up my mind on what to give her as far as prevention goes. Currently, she's on Heartgard Plus. I'd also like to find some kind of pill for flea control, as pretty much every topical on the market is failing down here. I'm considering: Heartgard + Comfortis: $121 every six months :yikes: Most expensive option, but I really like having the option of spacing out giving them to her. Currently she gets flea drops on the first of each month and heartworm prev. on the 15th. I really like spacing it out, so if she every had a reaction I could pinpoint which thing was causing it. Sentinel: $56 a year I'm unsure of how well this would work, as it only kills flea eggs. Trifexis: $89 every six months Seems like the best choice financially, but I've heard a few horror stories about it. I am not interested in putting on a topical heartworm prev. Let me know your thoughts/opinions!