Not as quick as I expected, but oh, so-o-o much cheaper than anywhere else - at least 25%.
Review by confirmed purchaser
I was not impressed when I rang the vet to be told I could have a cat flea treatment at more than £4 each, so I went hunting online, found lots of sites, then found one which offered the less well known brand at £2.50 each...much better! So far so good! I'm even more please, because I looked in the chemist to find that a pack of three Frontline was £19.99! Twice the price I had paid for 4 Effipro! Good company, going there again!