Bird B Gone - Weighted Sand Bag Base (6.5 lbs) - Stabilizer for Bird Spider 360 & Repeller 360 Deterrents - Weatherproof Blue Canvas - for Boats and Docks - Portable - Installation Hardware Included

Doesn't look like it will last and is difficult to assemble. Mounting screws pulled through on assembly. Once assembled (with larger washers that don't pull through the material), the bird spider doesn't readily sit upright and I had to modify the base of the bird spider to make it useable. The idea of the sandbag should be that it can sit on an uneven boat canopy for example but it's completely ineffective on anything but a flat surface. In that instance you might as well use a plank. It absolutely does not represent value for money as it is very close to not being fit for purpose.

Just purchased our second bird spider and sandbag base. These things really work! No seagull poop on our boat! The sandbag really holds it in place. The video shows seagulls and poop all over the boats around ours, but none on ours! We haven’t had a single bird poop on our canvas all season.

This is the second unit we've purchased with the weighted sand bag base. We had an issue with birds continually landing and leaving droppings on our boat. We installed one Bird B Gone and it works so well that we've ordered this second unit to cover additional space. Highly recommended.

We need these in order to prevent the wind from moving the Bird B Gones into the water. On a couple we have had, the screws come loose and this prevents the spinner from working as it should. Overall, the spinning ones work better than the ones that don't spin, although they all help to prevent seagulls and ducks from sitting on the dock or the cover on the hoist.

Easy set up with sand base. Used on boat canvas, kind-of worked when first installed and I modified a bit to make sand base more stiff, but when wind gets strong the "spider" legs tangle and base tilts downwind so does not work at all now. Too late to return now, so likely will throw away instead of throwing more money at it.

Not enough sand makes arms tip to one side then not spin. But still very effective in keeping terns n gulls from feeding and relieving themselves on T top.