I've purchased quite a few things over the last two years, they are very good, right stuff and quick delivery.

I used Beck-olija insect repellant in Canada, Algonquin in June while canoeing. One bottle will last a week. It visibly worked on mosquitos but you smell like you've been smoked for a week. I prefer it to 100% deet.

To be honest nothing really repells mosquitos, Used this in the north of Sweden for a couple of weeks in the summer, no real affect, still got bitten badly and smelt like a freshly kreosoated fence!