Which Flystrike Method

Which one should I buy this year, I've read different things about each brand.

ETA I do have two rabbits that are prone to sticky bums. One is overweight and middle aged. The other slimmer than she used to be and very elderly now.

i use beaphar as its cheaper and regulaly check their bottom area

I had this dilemma last year and after reading several threads on here about both treatments I opted for Beaphar Fly Guard. I think I was as worried about the strong chemicals in Rearguard as I was about the flystrike! However, I still chickened out of letting Daisy go outside

I had one of my buns rearguarded at the vet's a few weeks ago. The vet recommended it because Toby sometimes gets a sticky bottom. However, having now done a lot more reading up on here and elsewhere, I don't think I will be having it done again, as I hadn't realised before that as soon as you wash their bottom, the rearguard is no longer active as it gets washed off (at least that is what I understood from what I read).

I am now trying to protect them just with other methods (keeping all areas clean, fly netting, citronella etc, and washing bottoms when necessary).

I'm not sure which product is best though if you do choose to get it done.

I still can't decide although the high chemical level of rearguard does put me off.

I use f10 insecticidal wound spray which is around £10. It does have to be applied more frequently than rearguard though - every 2 weeks