Very good company for delivery and customer service if any problems with order. I purchased the squirrel buster 0.75 litre and the newer design Squirrel Buster Evolution 1.2 litres. The squirrel buster 0.75 litre has a clinging mesh which the nuthatch and woodpeckers use but the only problem is the drainage holes are very small and get easily clogged in wet weather. The squirrel buster 0.75 litre is much better than the newer design Squirrel Buster Evolution which my squirrels 'busted' in a few minutes by twisting the lid off and squeezing their whole body into the tube to feast on the sunflowers. The lid needs a better design.