babyjane - it's actually about practise - I would try the fine waxed floss first - make sure you use a long enough piece of floss so you can wrap an end around a finger on each hand and gently ease the floss between the teeth, don't push the gum back with the floss but slightly ease the floss to where the tooth meets the gum then draw away from the gum along each edge of the tooth to remove any food or plaque.
My dentist showed me a trick for teeth that are closely packed but have a small gap near the gum where food etc can get lodged - make a knot in the floss then ease it between the teeth but don't pull it back up, just draw it through holding one end and the knot will remove any deposits as it comes through.
I use both floss (waxed) and the tipi brushes as I have crowns and different size gaps between my teeth and once you get used to using them you'll find it gets easier. I was advised by my dentist to use an electric toothbrush as it stops you from brushing too hard and removes plaque better. I have got used to using the electric brush as it's easier to reach the back teeth. I try to clean so well that I don't ever have to go to the hygienist - I usually only need a small amount of plaque removed at my annual check up with my dentist.
DG x